RockyMtHigh given your statement that they (the customer) don’t really have the right to be rude, then I challenge you to back through your comment history and review some of your comments. Perhaps some of your opinions may have provoked the types of responses you dislike.
With the location of the company I’m guessing @doublevr may be ESL and sometimes the context of the question could be lost in translation.
And to be clear, I’m not a business owner, I am a software Product Manager for a very large software company that you may have heard of.