Misleading deals in brochure

I am am very un happy with Vodacom. They advertised 2 different Samsung deals in their January brochure, A33 5G, and A73 5G. For an extra R29 per month, you could get a tab with it. I have been phoning different branches for 3 weeks to get this deal. Every time I was told that they are waiting for stock. I have asked if I can come and sign the contract while I am waiting. I was told no every time. We are now in February and now I am told that the deal is not valid any more. This is not acceptable