No Response despite multiple follow ups (8 Months)

Please see below a short synopsis of my experience with MTN since porting back to the network:<br> January 2015 - After a nasty argument with the call centre operator who refused to log a call stating that it was certainly either my handset or sim card at fault, I arrived at the MTN service centre demanding that MTN staff prove the faulty handset or log a call. You yourself dealt with me and logged a call on my behalf - To date I have yet to receive any feedback and when contacting 173, there was no record of my case.<br> February 2015 - Logged a call with 173 for poor coverage - Awaiting feedback<br> June 2015 - Called 173 again (last week), the agent refused to log the call stating that I, the customer, must contact coverage department directly. I refused, stating that escalation is the service providers responsibility and was eventually promised by a supervisor that he would escalate the matter accordingly - To date, no feedback<br> June 2015 - Personally visited the MTN service centre today and sent the above synopsis to MTN<br> July - 2015 - Technician visited and confirmed poor coverage<br> No feedback since despite 3 follow ups, two of which were submitted in writing.<br> <br>