Vodacom steak your data

I would give no stars if I could. Firstly my internet connection is forever going down so I have to phone customer service to get it back working, don’t know how they do it but they manage to improve the signal from their end. Today they gave me an extra gig to use today when I look at my usage which has been very little as I have been out all day it has supposedly used the whole gig plus half a gig of my own data. I phoned customer service to find out just what has been going on and they sent me an sms telling me they wouldn’t speak to me unless I paid for the call as I had contacted them to many times!! A whole gig disappeared a couple of weeks ago for no reason so I really don’t understand what is going on. I hope people realise Vodacom have no back up batteries to their masts so when we have load shedding you can’t use the internet anyhow. I’ve been a Vodacom customer for 20yrs but I’m moving .