I'm so done with mtn contract

I see I'm not the only one to complain about trying to cancel my mtn contract. It's been 5 months of my contract has ended with mtn, yet they are still asking me to pay. I'm not getting any data, sms or airtime. I called the call center they told me I don't have a contact with them anymore, so I want to know what am I paying for? When I'm not getting anything from mtn. My salary is at 50% cut and I didn't budget for something I don't know what I'm paying for. I'm gonna to be blacklisted for a contract which ended in November and I emailed the mtn customer service but yet no response.