Houston, You Have a Problem

Something's been wrong with my credit card balance. I keep track of all my transactions and so does my Bank. But my balance was not matching the balance presented by the Bank. I took the effort to dig down to the details. Counting the beans carefully, I realized the Bank's system was making errors when adding up numbers. I nailed the problem down to a single screenshot and forwarded it to the Bank, together with all my account details.

They emailed me back asking to contact their call center and promised to solve MY problem.

My problem is I am overcharged 10 cents. Which I don't care about. Nobody would.

But.

Dear Mr. Bank. If somebody presents you a proof your system makes errors while adding numbers, well, then YOU have a problem. And don't try to help me. Help yourself! Run to nail the problem down and solve it.