Incorrect service suspension

My service was suspended 3 days ago due to an incorrect non payment issue from two years ago. At the time I sent all my proof of payments confirming payment and that my service was suspended in correctly. Now two years later(after thinking the issue was resolved) my service has been suspended again. On Monday the 6th may I got an sms saying myservice was about to be suspended, before this happened I called Mtn and spoke to a lady who informed me of problem of “non payment” from two years ago and said she would remove the suspension but can I please email(again!) the collectors department my proof of payment. I immediately did this on Monday and after countless emails I have heard nothing back. My service has now been suspended for 4 days and I can’t make any outgoing calls so I cannot phone Mtn! I am incredibly frustrated and have run out of options hence I am not hoping to get a response if I post my experience here.