This is not quite true. There are quite a number of teachers of foreign nationality, and even local teachers are quite good in teaching, sometimes better! At least thats the way in my center -- Cambridge English For Life
I don't know about other centers, but there are only 9 certified centers in Malaysia, 6 in KL and 2 in Selangor and 1 in Penang. Are you sure that you called the right center? The one you called might be bogus. check it here:

http://cambridgeesol-centres.org/centres/s...ion=ALL&=Search