My DD(7) and DS (10) go to their dad's (exH) every Friday night to Saturday night. I called my son's phone today as I wanted to check with my DD which school shoes she wanted (hers are broken and she needed new ones asap) . he answered and had the phone taken off him by his dad and I asked if I could speak to DD and he said "I'd rather you didn't call when they are with me". And that was that. I was literally stood in the shop, she is very fussy so I just wanted to quickly ask which ones she wanted. AIBU??