Worst Cell Service Provider?

I have being logging issues for approximately a year regarding dropped calls & slow 3G data speeds, long periods of no 3G. I was going to give notice - moving off as a contract & go pre-paid and review my options.<br> I decided to give notice ending my MTN contract. I sent off an email to MTN giving instructions that the MTN service must end on 20th Sept 2015. MTN then cut my service and removed my number off MTN on the 17th Sept 2015. The MTN Carletonville tried in vain with the MTN HQ to get the number reactivated. More than 24 hours later and still no success. <br> Asked Vodacom to Port my number & was told Not a Valid Number on MTN. Vodacom advised me to get MTN to REACTIVATE the cell number and simm again. Vodacom would then be able to Port my Cell Number.<br> I can't get through to MTN 808 because I must supply my Cell Number and the MTN system tells me it is not a valid number. So 2 emails sent off to <br> I now can't even receive notifications from my bank regarding movements. MTN has placed me in a serious risky position due to termination on17th instead of 20th Sept.<br> I really need somebody in MTN to apply their minds regarding this issue and come up with a speedy solution. <br>