Pathetic service

Since the very first day of applying for a contract with Mtn, I've been having endless problems. Since April i have not been receiving sms as per the contract that i signed. Which means they are in breach of contract, yet they receive payment every month. I have complained about it on numerous occasions and the Manager has even logged a case for it herself, yet 5 months later i still have the same problem and am still waiting for feedback. I was told i would receive an answer within a week and that was 3 months ago. A month ago i went back again and the manager was conveniently not available, eventhough i could see and hear her in the back. The consultant promised to contact me by the end of the day and once again i am still waiting for feedback. I have just had enough of their lies and pathetic service. The staff members makes deposits at my work on a daily basis and i kept on asking them to let their manager know im still waiting for an answer and once again i receive nothing.. i cant stop paying them as it will affect my itc proflie negatively but i'm just at a point where i have had enough of them messing me around. I am paying for a service and this is what i receive.Pathetic