Vodacom data *******

I noticed this week that my data went missing on my ****le i use for my laptop. Normally I would expect it to be used if I was working remotely from home however this has not been the case since lockdown was enforced and I have fibre at home. To summarize: I bought 3Gig on 30th April 2020. I received 1Gig on the ****le contract on the 1st May 2020. How the hell is it possible for all this data to be used up. Vodacom have ****** this from me. I complained to the lack of support desk and all they could tell me was. You used it, yeah right what *******. I have 3 cellphones coming up for renewal and I think 2 might already be due. I will more if i have to.