MTN IS THE WORST

I am now seriously fed up with MTN. I received a response via helo peter that I could now go to an MTN branch and do a sim swap. There is still an amount outstanding on my account which I have paid for on the 08th of July 2015. I paid 300 its now the 30th of July but I am told the payment has not yet reflected on MTN system. What kind of ******* is this MTN is operating like a tuck shop. You people do not care about your customers at all. It has taken 1 year and 4 months for me just to close my account and do a sim swap. Unfortunately I have contacts to recovery from my mtn number but I have promised myself never in my life will I ever use MTN as a service provider.