Matrix Delmas has no customer service!!

We took our server to Matrix, otherwise called Santos MCM Group in Delmas on 10-02-2020. We paid R5 146 of which R1999.13 (excl. V.A.T.) was for a Windows 10 Home 64 bit key. In May this year our IT company asked me for the key, as they had to re-do the server. We realised that they never gave us a key on a card or on the invoice. We have contacted them. They have sent someone out, but he couldn't recover the key. We went to the store, but the manager wasn't there. They phoned him and he told them to tell us that we must have reported it within 6 months and that he is not willing to give a new key. We didn't know we were suppose to get a card with the key on and the server only gave problems more than a year later. So we lost over R2 000!!