Really very bad service from Vodacom support

I put 10 Gigs 10 Gigs for my router. For some unknown reason. We have not been able to pick up any internet signal or able to connect to the router this was at 9:30 at night. So the next morning we went to Vodacom chat store in the area and they called the support and the support said we used 12.30 Gigs on Facebook. The lady Sharon from the Bluevalley Mall said we need to replace our sim as it is not allowing us to connect to the router. Okay so my question to her was then where is the 12.30 Gigs that is missing. Then they say we used it. I’m like how could we use it if you say we need a new SIM card because ours is not working. They say all they know is we did. Oh my word have I lost the plot or are we having to deal with people that have no cooking clue or not smart enough to listen to what they are saying. Well we switched the router off again and today without the router being on we have used even more data.