No response to data usage and billing

During January I received notification that my all data on Cell C had been utilised, at the time I found it strange as this mobile is normally at home and connected to my WIFI, so I called Cell C to query this, by then my bill had gone to R500.00 despite having a limit of R300.00 (was later advised that the R300.00 limit was in addition to my R200.00 monthly subs, something that was never explained to me when we set the limit, can you say pointless or just another ****)<br> After two calls (and now more that a month later) querying this data usage, which was the bulk of the R500.00 bill I have never received a call back and come month end I will be debited totally disregarding my query. what an absolute *******. <br> <br> Cell C I can see why people would put up billboards advertising the fact that you are totally useless. <br>