no service- network or customer

******* network, no signal for the past 2 weeks! when contacting customer care they tell me to do a sim swop as my sim is old - but when i move out of my hometown to other areas my service is magically restored on this old sim card, and as soon as i get back it disappears again. surely I'm not the only customer in town with issues and I'm sure I'm not the first to complain. no answer from cell c about what the problem is or how and when it will be fixed, just a whole lot of beating around the bush so they can take your money at the end of the month again.