My granddaughter would 't say please when i ask in a chip shop i ask her to move from the door so i tap her?

move but she wouln't so i tap her on the leg and i do mean tapped she is ten afterwards we were okay i told her dad and mum now they want let me see her i have taken her on holidays and had her every weekend for the last ten yrs what can i do ive said sorry to all concern but they want listen