I have to say I agree with your troubles at Joann's.
My sister and I both had mistakes on our receipt after a recent visit there, and I hate the way they stretch the fabric when measuring it. I usually have to buy and extra 1/8 of a yard so I make sure I have enough. I would rather shop at the quilt store but she closes at 4:30 and unless I can get out of work early I can never get there in time.
Nettie