Chambers of Commerce in Vietnam and their communication skills

I send some information about our barcamp event to three chambers of commerce: AmCham, AusCham and EuroCham. AmCham responded quick and nicely and promised to announce our event - what never happenend until today (even if I reminded them). AusCham and EuroCham never responded. I had in another case the same experience with the German Business Association.

It seems that beside organizing charity events they should work also on their communication skills.