Poor reception and poor service

No cellphone reception in my area, Vredekloof, Brackenfell . I went to the shop in Cape Gate and logged a call. A few days later someone phoned and said she rebooted the system. No improvement what so ever. Went back to the store to complain once again. A few days later same lady phoned and said case is closed, but still very poor cellphone signal. Can not take calls for the signal reception is so poor, you can hardly make out any conversation. Tired of Vodacom call centre excuses...I need action on to be taken on this matter and a solution to the problem