RECEPTION ISSUES

Hi, I have been a loyal customer of Vodacom for 17 Years on contract. I left this issue now for quiet a while again but just cannot carry on like this. I had complained a few years ago about the constant loss of calls, phone reception extremely poor, data connection coming and going. I upgraded my account and cell over n over the past few years but every cell phone does the same thing. I was told by Vodacom to collect numbers of neighbors with the same issues and walked around my neighborhood like a fool, got all the numbers and submitted it even though I felt that as a customer that was not my job. I was then told that they will be ***gy backing a tower near me and reception will improve, its another year that has passed and I am still at the same poor reception. I stay in town in Scheepers Hoogte - Uitenhage not even on the outskirts or between mountains etc...I literally have to stand in a certain spot, switch off signal and restart it and for a few minutes I receive a data signal, my cell reception literally jumps up and down up and down, more down than up. I am at the point where by I will cancel my contract and will refuse to pay in the difference how can I pay top dollar for this kind of issues in our time n age filled with technology. I am a service manager and need to be on stand by for my customer calls 24/7/365.....and I cant even get in a proper conversation who pays for all the dropped calls and the ''sorry say again, sorry I cant hear you, sorry repeat yourself''....Please assist ********** .