Dissapering Data

This is the second month I am complaining to Vodacom about the way my 20gig is depleting. I Have been using 20 gig per month since 2019 with Vodacom. This could last me more than I a month. Recently the data gets depleted as if I am constantly on the internet. I recently got a work phone so I do not use my own personal data as much, the 20 gig that used to last a month now does not even go past 10 days. This is the most ridiculous thing I have heard of, the first month it happened I thought maybe I was using too much data. I reduced my usage as I had another contract, Surprising enough it did not go past a week. I really don't understand how Vodacom is charging the data or are they taking advantage of the lockdown. This is absolutely absurd.

I cant wait for my contract to end so that I can move to another service provider!!!!