overcharged

I have been billed abnormal amount for the previous months . I have been sending complaints which are not dealt with if not i will refer to complaints commission. To my surprise i started getting this abnormal billing when i was told to upgrade my line and i had refuse . If this is not dealt with i will go to the media and also complaints commission. I have called your customer service and spoke to Mbali Zuke , she had put me on the line for long and hang out the line . Please dont come with your dont care attitude as i will refer this to the ombudsman My number is ********** 622 if you guys can contact me . The MTN contract number is 081 011 106 my id number ********** 282 081 . The Mtn number is a 3G contract you can only find me on my ********** , if this is not attended i will escalate this to ombudsman and also cancel the contract.