Rudest people I have ever came across, so unprofes...

Rudest people I have ever came across, so unprofessional. 1st I was wrongly charged for insurance because I decided to leave, as i didn't need insurance cause I sold my car, then I get an invoice for $80. I get a call to find out whats going on, they are rude to me, I hang up, next thing I know, its on my credit report. I call to sort things out and they are rude again. I give up, now I just called again because I'm able to just pay it and not have it in my life and not argue about it anymore and the person is rude again. I simply asked for a written confirmation of payment and she was rude. So I hang up. Mind you, this is the only collection I've ever had in my life, says alot about the company. At this point, I'm going to dispute it with the credit bureau. I have enough evidence.
Do better.