Are customers always right?

Its a bluey, sucky Monday! Spoke to some customers who are totally unreasonable, who blames the whole world for the pathetic state that they are in. Haven't customers realise that for every CSR that they screw, at least 5 people are screwing them back? Haven't customers realise that by screwing the CSR early in the morning, they are ruining the CSR's day and their own mood will be foul too. If more people could come to terms with this logic, I am sure that the world is a much much better place to live in.
And then again, some would argue that some CSR really deserves scolding big-time. I agree totally. These are the ones who have no courtesy, impatient, shown refusal to help and so on.. But, But, BUT.. there are some kind and friendly CSR, who simply cant help due to red tapes and certain regulations (clearly stipulated inside the contract which customer signed! and yet, the-contract-has-so-many-fine-prints-how-u-expect-me-to-read kind of customers would just argue their way through..) Haiz.. Customers are always irritating!!!