mtn contract

i signed a contract for uncapped data, unlimited calls and messages in august 2015. Within 2 months my number stopped working. (said it doesn't exist). It took a day and a half for MTN to find out that my number was in process of being ported to another network. Another 2 days to fix the problem. Not to mention the amount of business i lost in that time. After that i keep getting this the voice, \one minute remaining". Unable to make calls after that. Remember its unlimited calls. I have been charged a lot over the set amount i supposed to pay. i keep getting messages saying i am going to start incurring charges.<br> I am fed up with MTN and don't want to use their service again. I am trying to cancel the contract from November 2015 yet they not responding. Below is what mail I get today with no contact number.<br> <br> We apologize for the delayed response.<br> Kindly be advised that your termination date is on the 2017-08-17 however you need to pay the early termination fees so that we can able to cancel your account.<br> Please do not hesitate to contact us should you require further assistance.<br> Best regards"