Unresolved issue since 4 May 2015

I mailed MTN customer service on 4 May 15. I queried an extremely high invoice for data usage on my iPad - R1266.62. I asked for an explanation and explained in return that my average bill is R99 per month. <br> I received a response on 15 May 15 with little information provided and a short explanation in industry jargon which did not allay my concerns. After replying immediately I received a response same day to say I would receive a print out of the bill for review, allowing for 7 working days. On 31 May 15 I mailed again to ask for a response, having since been debited of the amount I queried. 13 days later I mailed again to ask for a response. I was rep**** to with an automated response to say the delay was due to an industry strike. On 4 July 15 I mailed again to ask for feedback,stating that I wanted to cancel my contract. I received another copied and pasted response saying there would be an early termination fee. I queried this and received another unrelated automated response. It has now been 18 weeks since I first queried this invoice. I am incredibly angry and frustrated now that I tell everyone I know how horrific MTN service is. You will not get my business ever again.