MTN ONLINE CONTRACT

So 2 years ago I took out a online contract with MTN (Data Sim card) I have had no issues whatsoever and never had a missed payment on it. Until they deducted more then what was agreed to. MTN debited R1445.75 instead of the agreed amount of R333.34.

I then called MTN to get answers with no luck, they did not want to give me an email address of a manager or someone that could directly assist to get my contract or answers as to why the monthly fee suddenly went up with R1112.41 with no heads up.

I then went to a MTN Store and had to upgrade my contract as it has expired according to the sales lady. She then also confirmed that the online sales are causing huge problems as they don't communicate properly with their clients. As of now I am still waiting for my contract. They have handed me over to a company called Nudebt which is a hassle to get hold of as well.

My amount stands now on +-R5500.00 and Nudebt expect me to pay this in full.

Can anyone reading this please assist me. I do not have R5500.00 to pay MTN without even getting the necessary help from them.