Theft

Last week I have upsized by data which costs me R25 for 1g for 7 days. The first day everything went well, the following day I don't have airtime, I contacted Vodacom via Twitter and they have asked me whole lot of questions and screen shots over and over again. Eventually they got my transaction but then my bight mare started. They gifted me with a 1g for 30 days. To my surprise I thought that was in addition to the 7 days 1 G, but nooo, just 1 G for 30 days. I tried explaining that I don't want their gifted 1 G but. Y 1g for seven data as I use 1 gig a day, so for them to gift me with 1gig fora month means I am only going to use it for I day. I feel vodacom is robbing us day light, they didn't even give the reason why that happen. Or at least apologize for the mistake. I need help to report them to the authorities, please assist