Mediocre customer service and cancellation process

I wish I could give a zero start. service client is mediocre, I canceled my account with them over the phone, they said they will get back to me with an amount I need to pay and I heard nothing back. They kept on debiting my account and when I called them, the agent would hang up the phone. When I blocked their debit order, they sent it off to a debt collection company. This company is just a ****. Do not make use of their services.