incorrect billing will lead to legal action

I have been billed incorrectly for the month of June and July. Despite numerous calls , I have been given different ref nos. Also, I was told that mtn was on strike since May and that queries should take about 3 to 4 mnths to resolve. However, queries are not sorted out before the next debit order is going off. I have to wait for 1hr 09 min or 1hr 45min to get through to a consultant sometimes to be cut off.<br> Everytime I'm given a new ref no. and told that I will be contacted. No such thing to date. I'm frustrated ...