Enfield Motor Sports

I am a long time motorcycle enthusiast and have bought bikes from Enfield more than once. In the last month I purchased a new [redacted] snowmobile trailer from Enfield and I could have bought one elsewhere for less however I wanted to support a local dealer. When I went to pick up the trailer I decided to purchase a spare tire and spare tire mount and two atv tubes(again much more expensive than if I had bought online, I mention this to stress that we we have choices) and add it to my bill. A couple weeks later I get around to installing the tube and see that they sold me the wrong stem type(it was rubber and you need a metal stem with nuts to stop the tube from shearing the stem off) I decided to try it anyway and after one ride it sheared the stem. I returned to the store today to exchange the other tube which I didnt open for the correct one and was told I couldn't because it was over 10 days. I asked the parts guy to check with the owner and explained I just purchased the trailer etc... he left and came back in a few minutes to tell me the owner said we do not take back tubes.I left the dealership without a refund or exchange extremely dissapointed. I left the tube there too.....apparently they need the money more than me.
I am at a total loss for words. It blows my mind that this business is so short sighted and can't see that they lost a customer. I will never set foot in that dealership again and neither will my friends. That $30 tube is going to cost them thousands. Foolish.