MTN is pathetic!

Contacted MTN last week to ask about my settlement so o can settle my contract. First consultant I speak to says she will transfer me to retentions so they can assist further, call gets transferred someone from retentions picks up and puts me on mute so till i eventually hang up. I call again and speak to another consultant who then advises they can’t put me through because my account is in arrears, I ask her to please put me through as I’d like to pay the arrears and settle but I need to know the exact amount. She insists that they can’t help till the arrears are paid I ask to be put through to a supervisor she says she can’t do that only thing she can do is ask her supervisor to call me, I insist on staying on the line till she gets her supervisor. She puts me on hold then gets back to me advising that the supervisor is on a call and can’t talk to me. I hang up. I email collections again to ask for my settlement so I can settle my contract they respond with my arrears amount and no balance or settlement for my contract. All I want to do is settle my account and close it with MTN but they don’t want to tell me what my balance due is or settlement amount I honestly don’t think I’m being unreasonable. Also what type of call center doesn’t have a system in place where you are able to be put through to a superior when you request for one. And the first consultant had no problem putting me through the the department that would assist. MTN is pathetic!