At the 2 JoAnn's I shop at, you grab a number half way through your shopping LMBO other wise there is a good 30 minute way on sale days... they will even call your number over the PA and listen for you to yell "coming" LOL They are always short staffed at the cutting counter...
I haven't ever had them charge me for more than they cut...I would have raised a fuss as that is NOT right :x