Gymboree / service

My child goes to Gymboree Malaysia Bangsar village 2 at Jalan Telawi 1, Bangsar Baru. He is being made fun of by the Teachers. Like they call him lil big and stuff about his size. I am not happy with that. I don't want to name the teachers. But it's highly disappointing that such a big group like Gymboree has such poor standards followed within the playschool. Kindly take some action. As parents we expect our child to get the best treatment at schools and alike. And making fun of a kid is something not appropriate. It would be right for Gymboree to take some proper action.