12 months Prime Video Rewards False advertising?

I've been rewarded with a 12 months Prime video mobile edition plus 3GB of streaming data from Vodacom, I have tried to activate the service but I get an error to try again later, I have been trying but keep getting the same error and when I reached out to "Tobi" their device chatbot, I got transferred to human consultants who could not assist, citing that I have to pay a subscription fee, even when I referred them to the t&C's they were unable to assist. The reward is expiring in a few days and I feel cheated if this is false advertising.