I suggest you call them and simply ask: when was my refund check mailed out?
Don't delve into your dissatisfaction, the incident, etc.
My first take on this is that in this post, you took a very long way to get to your actual request: where's my refund?
While you provided many facts, it isn't real clear what you want. People, even for their jobs, tend not to read very deeply. Instead, they will just scan over communications looking for the "I want this" or "you need to do that" statements. Put that at the beginning.
Note that refunds like this can take anywhere from 2 to 8 weeks. It's possible you will receive your check this week.
