No data service for 4 months

My phone was ****** in Dec 2014. Phone and contract sim card was replaced soon after. Since new phone and new sim installed I have not been able to connect to the Internet using my phone.<br> I have had numerous configuration updates done by myself, Cell C call centre and Cell C branch members over this period at varying intervals. I have tried generic android APN settings, switching phones (in case phone problematic). I get allocated 200Mb of data p/m AND I have loaded bundles of 3Gb (currently) to remedy the problem - to no avail! I have inserted other SP sims into the phone and data is connected instantly. Put Cell C sim back and ZERO data connectivity. When at home (Heidelberg, Gauteng) limited phone coverage (Cell C usually tells me I'm \roaming"!?). I'm tired of phoning"