Worst people to try and deal with

Denis staff are the worst, the team leaders are even worse. I called them while at the dentist because they have been giving my dentist staff the run around all day. I was on the phone with them for over 2 hours.

I spoke to Sandra Goliath who was not helpful at all. Kept me on mute for more than 10 minutes at a time. I eventually asked to speak to her manager and was told that he is busy and she's not allowed to give me his name and that he'd call me back. I obviously have not received a call from him and my query still not resolved