Vodacom 'bust' ripping customers off!!

Here we go again!! I checked my balances this morning....I had 98MB data. I live in a household where I have wifi....I always turn ALL DATA USAGE OFF ON MY PHONE if I'm not in our wifi range... a quick walk to the shop to buy something...GUESS what....all my data VANISHED! I phoned Vodacom Customer Service to complain.... they only have access to the previous month's statements....BUT VERY QUICKLY THE CONSULTANT SAID AS A "GOODWILL GESTURE", THEY GOING TO CREDIT MY ACCOUNT WITH DATA....it was an IMMEDIATE response!!!....no arguing/ questioning etc....they credited immediately.....DOES IT SAY SOMETHING ABOUT " GUILTY AND BUST!!!!!".....now how many people are not QUERYING all this!???? They raking MILLIONS in from unsuspecting customers!!