Bad service

Samsung rewards,

I have claimed my promo reward for my S9 on the 27th of April 2018 before the closure of Samsung rewards. It was a DeX Pad and 128GB memory card. I have contacted them on a view occasions via e-mail. The eventually said that it is with the courier. I contacted them again regarding my address change but they did not reply. I contacted them again and asked who the courier is so that I can phone them regarding the delivery by till today they did not respond to me again.