I purchased "The Handbook of Astronomical Image Processing " from Willmann Bell in the USA. After purchasing, I became aware from other users that the software would be unsuitable. So I requested a refund from Willmann Bell. They said the package had already been shipped but I could return it for a refund. After receiving the book and software, I thought I would install the software on my PC to see if it would be OK. I found the software unsuitable for a number of reasons. I then returned the software the following day. Later, I received an insulting email from the president of Willmann Bell accusing me of fraud and refusing to give a refund because I opened the package and installed the software. He also sent a cc of his email to the authors of the book and software

. In hindsight, I should not have opened the package

.
I am astounded he thought the incident so important that he wanted to hurt me professionally and personally!