Think of each channel as the ops "home", they have a right to set their own rules, whether anyone else likes them or not, just as they do in their real home. Its a good idea to read the topic and any rules sent to you when you join a channel. WHile kicking you out for no good reason may be rude, it isnt abuse, hence nothing to report.
If the ops in any channel behave in a way you consider rude, just dont go there... there are tons of other channels to choose from where the ppl are friendly