Shocking service

At the beginning of March I ordered a Samsung Core A3 from Incredible Connection. Nothing on their website or at any time of the order process indicated that the phone was network locked. When the phone arrived, there was a big sticker on the phone that indicated it was Vodacom locked. I have been trying to return this phone since 11 March 2022. I have phones, I have filled in forms, I have taken to Twitter but still nothing. What do I need to do to get service? My return number is ***.