Overcharged

I migrated during Nov '14 to a Mychoice200 package at R229pm, which include air time, data and SMS bundle as per MTN brochure.<br> <br> On the Dec '14 invoice I noticed:<br> Although there was approx. R2500 airtime available on the old contract (which I forfeited), MTN charged me for the last call I made before migration.<br> Secondly, the amount charged to the new package was R270.00pm plus a the promo service fee of R19.00. <br> <br> I submitted a query to MTN Customerservices on 29 Dec' 14 and since then, have sent numerous reminders. The manager at the local MTN store, where I migrated, also forwarded the queries to her regional management (apparently I was not the only customer with this problem).<br> <br> In the past I usually received a reply 7-14 days after my query, starting with something like \We apologise for the delayed response..."and ending with \"" We thank you for your patience... we will strive for speedy resolution...\"" I have however not received any feedback since my last query on 21 July 2015.<br> <br> On top of the unresolved queries MTN increase the contract value without notification in May '15.<br> <br> I am a MTN contract customer since June '98 and have never been in arrears on my account.<br> """