EFT Payment not allocated correctly and now line suspended

I made an eft payment on 10th of May 2018. The money was allocated to the incorrect number and my line is suspended. When I phone MTN in May 2018 I was assured that they will allocated the money correctly. Which is not the case. Today my line is suspended again and told that I did not pay my account. I will be cancelling both my contracts and move it to another network. MTN is pathetic!!!!!!!!!!!!!!!!!!