Problems with advertised free Amazon Prime offer from Telkom- not honoured due to Telkom technical problems

I recently signed up with Telkom for an FTTH contract. The fibre internet performance is great BUT...... Telkom advertised a free 3-month Amazon Video subscription as a bonus. I phoned many times to activate the subscription and finally received the Telkom email activation link. The link was an offer for 3 months of free Amazon Prime Mobile Edition, when the orginal advertised offer was for Amazon Video! When I tried to redeem the offer, I received the following error message : "Failed to Activate Amazon SubscriptionTelkom SA: Dear Customer, your subscription to Amazon Prime Video cannot be processed due to an invalid service number provided. Please confirm the number and try again".

This is a disappointing outcome, and the whole experience has been frustrating; therefore, I cannot recommend Telkom from a customer service point of view.