WHAT IS GOING ON WITH MY DATA!!!

ok so im going to type out my entire situation as it seems no one understands what the **** they doing or talking about to help me!! I dial *141*2# - 2(internet bundles) - 5monthly- 6(500MB (R105) ) . or -3(BB and Internet) - 3(Social Networking 75MB (R19) - I have used both of these!! and in 2days regardless if I put all my apps off it is still depleted in 2days!!! I don't even use it!!. so im spending R1800 on airtime every ****ing month and I have had enough!! im on contract and get toped up on the 13th it is now the 17th and im sitting with **** all!! so I would like to know what is going to happen and how is this going to be fixed!!??? when I was with CELL C I never ever had this ****ing issue!! I feel like I made the worst mistake by taking out an MTN contract and to think I was going to take out more. who the hell is going to pay for my data??? and how is this going top be fixed!??? I am NOT!! going to be paying so much every month just to tell me in 2 days its depleted! that's ******** if im prepaid and on contract!! and I have tried the 1 month data and 6 months bundle and every time it is gone in 2 days!! I want this sorted out ASAP!!!