Coverage

I have been complaining about no signal at my work office for some time now. I have emailed coverage help desk and customer care several time asking for feedback on how the problem can be rectified. The only response I have received twice is that my request has been logged. I have been trying to sort this matter out from the beggining of July 2015 and still have little to no signal at my place of work. I have checked my handset and all is in order. other employees on different networks have full signal. This issue is negatively effecting my business as clients can never reach me. Mtn service has been non existent and have no choice but to take out another contract on a different network. I will also be seeking legal advise concernin g this matter as I would like my existing contract with Mtn cancelled emediatly.