Business ProfileforNational Tool Warehouse

Purchased from Amazon Store:On September 24, 2023 I ordered 2 ATD Tools 7811 work stands ( Order # ***-8933573-1656202). On September 27, 2023 I received what should have been 2 complete workstands. Instead I received 1 complete stand and 1 missing the legs. I immediately contacted Amazon Customer Support, where they told me a return label was emailed out. Which I never received. Then my account showed a replacement was on the way, which a few days later was cancelled. October 5th 2023 I called Amazon again to inquire about my return and they told me the case had been closed. I asked how and wasn't given logical explanation. They resent return label, which I printed out. On October 9th 2023 I returned item too the *** store. Tracking number 1ZA81G969043136619. On October 11th 2023 the seller National Tool Warehouse received the item back. I have contacted Amazon numerous times concerning my refund and keep getting told ***** hours or 7 days before I get refund. Plus they keep using excuse that it is a 3rd party seller. So now the seller has my money and the item back! Their doesn't seem to be a since of urgency to refund my money. And every time I'm told their awaiting an approval. It has already been 31 days and they can't get this situation corrected. Not sure what to do other than complain and or file complaint with my bank as well