What is bad customer service?

bad customer service is when you do not take the time to help someone because it is not profitable to you in any way.

it is ignoring a customer.

if you get a query and you do not know the answer then you should refer them to someone who can answer their question.

bad customer service is being in polite and not helpful in any way when needed buy a customer. being rude or obnoxious is bad too.