Bought sneakers online, but never received them.

November 2020,bought a pair of sneakers for my self and my son and track top. I never received sneakers for my son. Received a track top with splashes of a dark substance and received my sneakers. Never received sneakers for my son till date. I sometimes write them mails with no response. I still have the receipt that they sent to me. I will never trust them ever again. I buy clothes from Archive now.