MAKRO NO HONORED MY REFUND WHICH IS THEFT

I bought a Gardena Hosepipe from Makro which was on special When the hosepipe arrived it was NOT Gardena and Not even the same specs. I booked a return and after literally begging Makro to collect it they did 3 weeks later when their terms&conditions allow for 3-4 days. I am now after 2 weeks of collecting the item getting nowhere with my refund. I keep calling and getting the same excuse. They have not fulfilled their terms and conditions and I have no idea how to get my refund from them. They have literally stollen money from me.