MTN Account Double Debited on cancelled account.

I have been trying to get through to your call center for some assistance nobody can help me. I even went to mall@reds mtn store to try an assist me with my account. They could not help me they told me to call the same call center number that I had been dialing. Your agents need better training. I am trying to sort out my account with Mtn which I was double debited again for the second time on a canceled account. Nobody can help me. I am highly disappointed in Mtn services I am considering moving all my accounts to another service provider. I am disgusted with the service encounter. where I am having to deal with the same issues twice in a row.