I think the mother is being a drama queen. They didn't refuse to cut her hair all together... They just refused to cut her hair while breast feeding, which I think is completely reasonable. It's a health & safety issue. I can't imagine the baby would be comfortable under the big cloak, or if it wasn't under the big cloak.. There would be hair falling all over its face... What if the hairdresser dropped the scissors??
It would be different if they told her to leave the store & that she wasn't allowed to breast feed.
I strongly believe a mother has a right to feed whenever & wherever she likes... But health & safety needs to be a concern as well.