Kidzee School — Rude talking with parents

Address:	Pune, Maharashtra, 411014
Website:	www.kidzee.com

Incharge of Kidzee school, Kharadi does not allow parents to talk to class teachers . Recently they have planned to have an annual event and my child would be performing in that event. So my wife went to drapery shop (suggested shop by kidzee). they did not have proper dress for my child as per his performance. So my wife called up my child's class teacher just to know about the exact dress. So his teacher felt very troublesome receiving my wife's call, she literally irritated and she complained this to Incharge of Kidzee kharadi.
And then Incharge of Kidzee kharadi talked very rudely with my wife.

Is that way teacher should talk to parents? What was my wife's mistake?
Kidzee School Kharadi is worst place.