In the evening, Teena knocked on the door of Dev. Dev welcomed her and ordered two cups of coffee through the intercom.

Teena: Actually, I came to talk with you about some unusual expenses I noticed.

Dev: Oh, great. Are you here to complain about our accountant? Is he refusing to help you? I ordered him to help you. How dare he?

Teena: No, he is OK. I want to talk to you about some unnecessary expenses I found.

Dev: You're good with spreadsheets. I am not. You do your job. Let me do my job. I respect your style of work. I admire your honesty. But the fact is, this is my department. I know how it works and I am doing whatever I think is right. You're not the one I need to explain to. I hope you understand.

Coffee had arrived at that time. Teena didn’t feel like drinking coffee anymore. But couldn’t refuse it, considering the waste.

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Teena was angry with Dev. She had found nothing to prove that Dev is wrong. The next day, Teena got into the office and observed all the details she had. She calculated all the expenses, analyzed them, and found something suspicious.

She found that Dev favored his favorite employee to do whatever they wanted. Even allowed two meetings for a week with the same client. Allowed the expense of travel for that client. Some bills were three times higher than usual.

Teena took all the audit files and left the office for the main branch. The chairman asked for the audit report for a week and she took the time to talk to Dev. Yet, he didn’t help her. She is going to submit the audit report now.

Teena met the chairman, submitted the audit report, and explained her observation. The chairman also suspected the unusual expenses. He called Dev and told him to come to the main branch with the financial documents. He wants an explanation.

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The next day, it was a post-launch period. Only three people were in the room. Chairman, Teena, and Dev. The Chairman asked Dev to explain some unusual expenses.

Dev: I am not good at making an audit report. I am not handy with spreadsheets either. Yet I came with some documents. Have a look at this. (He opened his file and took out a paper, submitted to the desk). Robin has some special customers. You, (pointing at Teena) suspect his expenses are unusual. He is the top seller of the company. He has a customer who buys almost 60 machines per year. While all other customers' average is only 3. Twenty times higher. We have to treat that customer that way. Isn’t it?

Teena was checking the documents provided by Dev. The Chairman was looking at Teena.

Teena: Don’t you think it’s unusual too? 20 times higher than any other customer! We sell an average of 1000 machines per year. 60 is a smaller number compared to the total. But, a person buying 6% alone. He also gets a 30% discount, while others get 5-8%. Don't you think it’s suspicious?

The chairman: I agree with her. Do you have anything to tell about this matter? What does he do with 60 machines per year? The discount rate is high too.

Dev: I am allowing the discount based on his buying rate, which is the highest allowed discount policy. But, what he does with these machines is not my concern. My job is to sell products. Not enquiring.

The chairman: You have a point. But I want both of you to inquire into this matter and tell me what you find.

Dev and Teena came back to their marketing branch together. They set a plan, to catch Robin. Dev called every member of his team and declared that to submit documents of all expenses from now on.

Two days later, Robin went to meet his old client. After all the formalities, he submitted his expense document. Dev allowed another employee to meet his client at the same restaurant where Robin usually meets his. That member also submitted bills. Teena was right. Robin submitted higher bills for the same expense.

When a machine was about to deliver to Robin's client, Dev himself followed the delivery van. It stopped in the backyard of a commercial building. Dev's eyes froze when he saw the signboard of a reagent company here. Because their company was also a reagent company. He noted the name of the company and left from there. After investigating, it was found that the company was registered in the name of Robin and Louise, his client. That is, Robin had fooled them. They thought of taking legal action and informing the Chairman.

I would like to invite @samhunnahar, @memamun, and @afrinn to participate in this contest.