Bad customer service

I paid off my account and requested them to close my account. First I was told they couldn't close it because the money had not reflected on their statement, next thing they could not close it because I overpaid them. I used the money I'd overpaid them with and now they are saying they can't close my account cos I owe them. How is that possible when they first couldn't close my account cos I'd overpaid? Never mind the emails they never respond to. It's almost like they only care about you if you're getting into debt with them. I had someone email me telling me to first pay off my debt before I could close my account. Never mind that I had already emailed them proof of payment, sent them a copy of my ID and called numerous times. Horrible service. Take away the email address if you are not going to read the emails. ?