Outrageous bill after an upgrade with clear instru

Hi,<br> <br> I have to my throat with Mtn really. I had paid my account cash in June, but July my account was not debitted they changed it to the cash option without my consent.<br> <br> Beginning of July also had done an upgrade on my *** number, I told Aiden Christian over a million times to make sure that the line is a closed line. Once the montlhy sub is used up, I am to top up. My statement is over double this month. The service at the Waterfront is outrageous, It took them over three days to process the upgrade. I am not aboout to pay that amount and let MTN ruin my credit record this month as well. The branch just either lets the phone ring or leave it one side.I had used this platform and send an e-mail querying my statement