Cell C charging me for data I should be getting free.

I have 2 contracts with Cell C. One of them(and I have the contract and account I got from one of their shops) highlighting where they should be giving me free 10Gig data for the full 24 months. They charged me for this last month totalling my account to more than R2000 which they took from me and then told me you will credit my account after I told them I need my money back, I dont want a credit on my account. THEN not correcting my account by giving me my 10Gig free again this month so they just decide they are not giving me my free 10Gig anymore(after this CLEARY states that they should give it to me free every month for 24 months on my contract) after chatting to them I put the phone down and gave them a bad rating, nos my internet (the little that I do have) doesn't work properly anymore. (I have to switch my phone on and off 10 times a day to reset the data in a way. Now another thing, I also had a CAP on my account they decided to take off without my permission, if that wasn't take off my account wouldnt have reached over R2000 even if they did charge me for my free data and then they couldnt answer me for this. I still dont receive my free data and now Im having problems with my internet after I just upgraded with them. I am so dissapointed in Cell C service after Ive beem with them for so long. I have been told this is their mistake (there sbould be a recording) and that they would pay money into my account by the 7th, still nothing!! Evertime they send me reference numbers but they dont sort out this problem. This is clearly so easy to fix and I cannot understand why they dont just from fix it. I have pictures of my account and contract as proof that I should be getting this free data for 24 months.