I have a home wifi i...

I have a home wifi internet contact with vodacom, this morning I couldn't get any internet and when I restart my router I get a pop-up message saying I've reached my monthly limit, when I check my vodacom app there's no such thing, I still have lots of data left, so I called customer care, didn't get help, was referred to my nearest vodacom shop, when I get to the vodacom shop I'm told I need to folk out R200 just for them to look at it, i call customer care again and no body seems to have a clue, I still don't have internet and I've been placed on hold for a very long time