New Upper A Arm Troubles

I find it hard to beleivea reputable company wouldnt stand by their product or at least hear the story. However parts guys are in a unique situation people buy stuff eff it up and return it then sell it to someone else. been there where Ive opened up a part and thought"someones been messing around with this ..." Its taken me years but Ive found its all in how you talk to them if you come off at them pissed off its game over even over the phone. You have to use tact and act like you truly just want to get to the bottom of it and resolve the issue. Even if they say "you pay shipping" dont ***** about it hang up and ***** to the wife or the dog...if it gets real stupid elevate it up to the manager a typical counter person will tell you dumb chit...at some point you need a good customer service rep.