I am preparing to open a quilt shop in my town, so I'm REALLY glad I read this post. But, it did not take me very long to come up with MY answer to this situation.
1. First and foremost I would have made it right. I would have double checked the figures to find out where I went wrong, point out MY error to you and MADE IT RIGHT!
2. I would have given you a discount coupon to be used with your next purchase. This is how I, as a customer, would like to be treated.
Why they would ever argue with a customer is BEYOND my realm of thinking. But there is one other thing that does bother me.
Even though you wanted 6 inch cuts off of 10 different bolts of fabrics, UNLESS they have it posted somewhere they will not cut anything smaller than whatever, regardless of more customers or not they should have been willing to cut it. If they thought it might "back up the cutting table" they could have asked if they could cut it when the crowd dies down. (That would have been about all of 15 minutes maybe?)
IN MY NOT TO BE HUMBLE OPINION, that quilt shop owner need to remember they are nothing more than another commodity to the customer! After all, they aren't paying the customers to come in there!
I had a business once before and I learned from that business the C Y A. If you DON'T want to do something YOU NEED TO POST A SIGN IT WON'T BE DONE!