Telkoms Netflix 3month freebie

So I get offered a 3month subscription to netflix on telkom's account as a thank you for being a loyal customer. Sign up via the link given in the email. Register and recieve notification that telkom will be billed for the account. Today netflix informed me that my membership was cancelled due to not being able to bill telkom. So I phoned telkom to find out what is going on. Just to hear that the multiple emails and smses I recieved were an error and that I dont qualify for this offer as it was for new contracts only. Emails which were specifically addressed to me and had my cell no and acc no in them. Nowhere on any of the emails or smses did it say for new contracts only. Its highly pathetic that you get offered something and then you think everything is okay just to find out it was an error. I never recieved any emails or smses in over a month since I registered via that link to say that I didnt qualify for it or anything about it being an error. Only when I phoned to sort this out do they tell me. Absolutely pathetic service. So wrong to offer something and when you want to claim it come with "oh sorry it was an error". Im absolutely disgusted.