Do you feel a strong sense of guilt, even when the other person is at fault? The more you think about it, the more guilty you feel, and you even lose sleep?

My sister's teacher asked her to buy a copy of Wu San, so I bought it for her online and it arrived. Her teacher then told her to buy a copy of Bi Shua instead, so I thought I would reject the Wu San delivery (rejection would mean the courier would have to return the package) because there was no insurance. I then asked my sister to collect the other two deliveries from the post office, except for the Wu San book, and I told her not to take the book, just the other two. But the post office staff took all the deliveries straight away and they could not be rejected after they had left the warehouse. This was a mistake on the part of the post office, but they made me pay the shipping costs to send the package back. My sister came back and told me that they had a terrible attitude: why hadn't they been told in advance that the deliveries would not be taken out of the warehouse and that we would have to pay the shipping costs for this delivery.

When I got angry, I complained to the post office, but what I told the customer service was: It's not easy for anyone. As long as things get resolved, there's no need to complain. The customer service said that was fine. As a result, after a while, the post office called me to ask why I had complained. They said that they had not taken the package out of the warehouse without authorization, that it was just busy at the time, and that he had taken all three packages and just let them go out of the warehouse. They said that they could not earn back the money deducted even if they collected your packages for a year. I asked what should be done with this package, and he said it didn't matter.

He also didn't say he would help us solve the problem. Later, I cancelled the complaint because I felt sorry for him. I thought about the time I had left my phone at the post office and went back to get it, and how they had returned it to me. The more I thought about it, the more guilty I felt, and I even lost sleep over it.