When customer service representatives are not trained properly, keep customers waiting for a long time and do not resolve issues, this is called poor customer service.
It is very irritating to see rep’s efforts in resolving your issue and at the end having a simple question unanswered or no solution provided. In addition to this, when customers always hear only your voice menu, see offline live chat button and wait about a week for an email reply, they will definitely start complaining.
And be sure, they will not complain to your staff, they will turn to social media because they want to be heard.