Bestway the worse

I bought this pump and I was recommended to buy this pump for my pool I used it 2 times checking how it works and it have not pumped at all I call makro they said bestway says they are not refunding me and I must change the filter which I already did change it they say they assessed it and I need to replace the filter still does not pump they refuse to give my money back and that pump it not pumping bestway is the worse product they say they did asses it but they did not put in a new filter to see how it pumps