No response on e-mail

I sent the following e-mail to MTN on 30 June 2015 but no response yet now I have to try another means to get the necessary response:<br> What is it going to cost me to change to pay as you go at this stage because I do not have a phone as part of my contract and want to retain my number and are quite disappointed with MTN's service at this stage and do not even have service at this stage while I am visiting my daughter at Forest Hill KZN and your billing department can not sort out my faulty account after several months.<br> IT IS QUITE EASY LOSING A CUSTOMER BUT VERY DIFFICULT TO LURE HIM BACK AGAIN!!!!<br> <br> It is quite a pithy that I am forced into taking this decision after being a customer of MTN since the early 90's.<br>