False advertising is *******!!!

I received a sms from Vodacom saying that I have been awarded 12 months free mobile Prime Video membership and 3 gig streaming data per month and to accept this offer I have to do is sms PVME to 31118 to receive a link. I have smsd 4 times already and received no link. This is so disappointing from South Africa's "leading network" There is no work around there is nothing on any website that speaks of this promotion, it seems like it wasn't well thought out. is it even true? my offer expires tomorrow according to the sms, I do accept it so I hope vodacom can get back to me unless of course this is just false advertising, I am not a lawyer but I do know that false advertising is *******. This is beyond poor Vodacom