Rude Instructor

I have been gyming 2 years every morning at Virgin Active klipriver and not once did i have a problem until this morning!Every Thursday Morning i do a boot camp class and really enjoy it- this morning i must say was not a pleasant experience at all, the normal instructor was not in and the boot camp class was taken by another instructor (muguni)- after doing the warm up the instructor started showing us what to do when moving to the position i wanted to be in the instructor spoke to me in such a rude manner to say that this is NOT Sibu'siso's class this is his class and things will be done differently - which in actual fact i was waiting for him to tell us what to do!!! during the exercise that we had to do for 2 minuets i got out of breath and when i stopped he gave me the ugliest look as if he can do better and what am i doing here, so i chose to ignore it and carried on when leaving i waved goodbye and got a sceef look in return! our instructors should be motivating and be able to push us through the class as the instructors usually do! i was unsatisfied with this instructor and if he has to take this class again i will not be going! i was not the only person that felt like this