Bill incorrect and no reply from MTN

<p>On the 30th of June i was debited with R5771 as you can imagine given that my usual bill is R75 and i have a closed line, i initially thought it must be a mistake, some sort of *****. but then i saw on my statement that it was not. i contacted Grace at MTN who was very helpful and said that i would have my itemised biling by the Tuesday and i should have the URL report by the next Monday. she mailed my the so called copy of my contract but it was just an electronic copy of my info. i went back and check my records and whilst i couldnot find my contract - i renewed my contract when Autopage was still in existance. i however do have my statements which show that i was paying to have the closed line. i don't have all my statements so can't see what has changed, but i certainly did not unblock my line. i even have a signed document with Autopage which shows t hat i specially asked for the closed line and it was definitely loaded to my account. So you can understand my concern when i sit with a bill of over R10 000 for 2 months when it should be R150???? i have asked for a refund from MTN as i should have a closed line - im not sure what happened on their side, but i have had no reply to my emails either. can you kindly assist.</p> <p> </p>