Overcharged, AGAIN, no explanation and no help!

After receiving my bill of R1200 last month, i was advised by a clerk in the store it was due to high internet use, and no further assistance could be given. <br> <br> This month, i monitored the data i had available and preformed 3 x top ups of close to 2G of data, figuring the R350.00 that it cost me would be better than a cell phone account that is more than doubled. <br> <br> I received notice of debit this morning for in excess of R1400.00 !!!!! <br> I have not received an invoice from Mtn in around 3 months, and i have now been on hold for 20 minutes with the 808 call number from my cell phone, this is after being cut off on the first 3 attempts. <br> My Bill prior to these 2 months was around R550.00 - which is my contract rate. <br> Never in my life have i felt so angry with one specific organisation, and their customer service is non existent!