TBH this woman sounds like a right cow!!!!
I feel sorry for the poor baby being stuck under that heavy smock and I think the hairdressers did nothing wrong stopping the cut and waiting for her to breastfeed her baby. I'm assuming that the woman wasn't holding the baby prior to feeding it, and that they would have done the same if you needed to feed your baby from a bottle. I don't it would have been safe to continue with the haircut with a baby in your arms, regardless as to whether its feeding or not.
Not helping the cause at all......