My vodacom airtime is disappearing don't want this to happen tothers

I have always had good experiences with Vodacom up until recently. I am "pay as you go" and my airtime was disappearing badly. I had no idea what was happening and then I found out the same thing happened to a friend of ours who is nearly 70. He figured out he was subscribed to things he never signed up for. I investigated this myself and I found this was happening to me. I never ever authorised any sort of things, I have NO idea how I was signed up to so many things. I had NO idea. I think this is absolutely disgusting especially this year when peoples resources are so scarce. I am wondering why Vodacom is *****ing peoples airtime. I had NO idea I was signed up for things and I am pretty techno savvy so how many old people etc are having their airtime disappear. I sorted the issue out myself but I WANT compesanation for my airtime that I lost. I now have no airtime for season and I was saving my airtime.