He was so angry I had been sold shoes for DD that gave her blisters. He was fuming.
This was the second pair actually, firstly size 1G - after a day's wear at school she had a blister and said they were too tight in the length. She wore her old ones for a day so her feet could heal then we gave it a go for another couple of days but they still hurt her.
Went back to Clarks, they changed them for a 1.5F. Same again, she wore them around the house for a few days then wore them to school. Again blisters and this time pleading for me not to make her wear them.
I took them back without her as she was at school (in her old scruffy numbers!) and the manager said he wished he could have measured her in them himself but I have to work so yesterday was the only day I had to take them back.
He kept saying he would speak to the sales assistant and I kept saying "look, I don't want anyone to get into trouble, maybe it's just these shoes and DD's feet are incompatible!" but he was off on one. He said "you might as well buy her shoes in ASDA if you're not going to get a correct fit", "you pay extra for this fitting service" and on and on he went. 
I took my refund and crept away leaving him to rant.