Makro exchange with no customer service.

I bought a trojan skimmer belt on the 14 Feb 2021. Did not open it in the store, s/m always fits perfectly. When I got home I opened the box, unfolded the bel8,immediately I saw shoe prints on the inside rubber side. I put it back,because I was going to exchange it. When I got to the store the floor manager said the policy says "no exchange on the belt" I asked him what must I do, he said you can take it up if you want to. I asked him to call his superior, the store manager by the name of Garin Moodley came . He told me to call customer service, the number did not even bring,he said it's a call center. I kept dialing, nothing happened. Then I said what must I do next, he said I must do whatever I want to do. He left me standing at the counter.