1A Auto review: Return/keeping item/no refund

I purchased a radiator that their website on January 13 that they claimed fit my 2009 Chevy Silverado. Order confirmation 2MXA13NDOLK. Part number 1ARAD01319.

Upon delivery, we pulled the radiator from the box trusting their website and were about to install it until we noticed it was too small. The original box was already damaged beyond reuse and we used the box from a local radiator that actually FIT as claimed. Images were taken showing the state of the STILL NEW RADIATOR and box before shipping them out.

1A sent a return label, and after I sent the radiator back I heard nothing. Then after multiple emails I am told the part looks used and I am not getting my money back.

So one of their employees claims it looks used so they get to KEEP the radiator AND my money. I know it was probably resold already. They offered no resolution and if I don't get my money back I will be filing a charge back in 2 weeks through my bank and I will provide them with the images I took. I have waited long enough and this is beyond disappointing. I will share my experience everywhere I can until I get a positive resolution.