CALL CENTER AGENTS WITH NO CUSTOMER SERVICE!!

I am very disappointed in the service I receive from MTN with the call center agents, before i get through to someone, always i get a silent agent on the other side breathing on the phone but not responding and the cut the call. 2ndly I used to pay VIA debit order and i removed the debit order due to my pay date changing and mtn does not have the 27th and i pay every month and never missed but my lines now get suspended, and i was on a call with an agent(Zanele Ngobeni) for an arrangement and advised they cannot unlock my line, I requested to speak to the supervisor Menzi Khumalo but it did not go through, no call back, no feedback nothing! my lines are still locked but i paid and i have the current invoice due but im suspended, ive never had a problem with MTN, in fact i love your services, but now im being inconvenienced and no one to help me, can someone please urgently call me back and fix this! on *** or I will escalate this matter to CEO office and ombudsman please.