They might have not liked your attitude. Maybe should tried a jovial greeting instead of standing there with a long face like you entitled to a rare part that you obviously can't buy anywhere else.
Make them love you and want to help you, because there's no shortage of entitled blokes walking through their door and there's more where that came from.
They have the advantage here because they got the good stuff everyone wants, they ain't just some big box store kissing your *** to buy some Chinese junk.
Your presentation probably dictated how this went down and if you really made that comment about not wanting a loan, then it makes complete sense why this went down like this.
