Bad customer service

I've been experiencing this problem since January, I can't connect to internet it kepps on saying disconnect I tried everything thing I even went to cell C asking them to check my router I thought maybe there is something I'm not doing right. To my surprise when this problem starts is when rain updates their system without even notify its customers. I tried calling them with no luck they even done the sim swap for me but the haven't deliver my sim but they manage to debit R250 on the 1st of February I still don't have the new sim and it's still disconnected. Please help me on this matter it's frustrating to pay for something you not using