Dstv misleading rewards programme

Dstv offer an anniversary reward and mine was due in November. As I did not receive the award I sent an email on 14 December and I have semt them an email wirh proof. The reward was for valid 4 months family access. I provided screenshots in my email. REFERENCE ****** Last month after multiple emails the reward was given only to be billed for the family package and being told that the offer is only valid for one month. I am really dissapointed with Dstv and feel this is misleading advertising. I was grateful to receive the reward which should have been given in November but it was NOT which was not my fault. I would dearly love to know why I owe extra money when it says "4months on.us:" This is really dissapointing and I have loyally supported Dstv for many years now My account number can be supp****.