No Network coverage in our Area Ferndale Randburg

I have been using Cell C for the past 6 years.<br> It has been more than 2 months that suddenly everything changed with my connection to the Cell C network.<br> <br> Please can someone tell me the reason for this at Cell C as I pick up the Vodacom signal which means the signal is stronger and not connection up Cell C in my area.<br> When I reported this I was told to swap my sim card which has no effect and was completely unnecessary.<br> <br> This is acceptable as I cannot change my provider now because of my business contacts.<br> I need better service from Cell C.<br>