Poor Network Coverage

I am experiencing poor coverage in my area. Calls gets dropped while on a call or it goes to voicemail while my phone is on and I need it for work purposes as I work alot after hours and during the day. I can't access the internet and when it does work its very slow. I am using a Samsung S6 Edge which I have upgraded to 2 months ago. On Friday 19/06/2015 I logged a call with the Cell C network department regarding the poor network coverage in my area where I reside. I spoke to Bongekile and she gave me a reference number: ***. On Monday 22/06/2015 I got a call from the networks department to confirm that they will be sending someone out to have a look at the network coverage. On Thursday 25/06/2015 I received a call from the networks department to say that there is nothing they can do regarding the poor coverage in my area and that they can't tell me when it would be resolved. <br> To me this is really patheticservice as I have been a Cell C customer for over 6 years! What is the point of me having a contract and paying for a service which I can't use! Something needs to be done to improve my reception, whether it be a reception booster which needs to be installed from Cell C.