Unfair Treatment

I went to claim for a phone at vodacom mall of the north on the 15th July 2019. Was helped by a guy named Lehlohonolo ***). Unfortunately we couldn't redeem the watch and powerbank because the Samsung lady doing the claims was not around. He said I should call in Wednesday to check if she'll be around I did and she wasn't around we agreed that I'll call again on Friday. I called on Friday and he said I can come over I gave my son taxi fare money to go there since he is the one using the phone. Unfortunately he wasn't helped because of network problems and was promised they'll call him. On Monday after realizing he still hasn't received the call I called Lehlohonolo requested the number of the person I can contact from Samsung since I've been waiting for the once we claimed for the 1st phone till today. I spoke to a guy called Sello***) and he told me I'll only receive for the 1st phone. When I asked why he said because the special was over and the person who sold the phone to me should have told me that. I called Lehlohonolo again and he told me that they were never informed about that at the store. Texted Sello and he said the special was over. I feel unfairly treated as I was never told about that instead I was made to spend money doing calls and sending my son there and empty promises were made to him.