Yup, my mum was told by the GP that no-one would see her in person, a&e would turn her away and that paramedics wouldn't enter the house. Bear in mind we are on the Isle of Wight, hardly run off our feet with covid.
My 75 yr old was told to just 'stay awake', in order to keep her safe. It took me two days of solid phone calls (while he watched her) to finally get through to someone who could help, a suicide prevention charity. They came and saw her, sat and listened to her, then made some calls and kicked some arse. Suddenly the crisis team responses, and a bed became available.
Ironic of course that the initial.lockdown caused the problem, and the cause of the eventual breakdown was our Gp prescribing antidepressants over the phone with no follow up, and then changing them 5 times (yes, 5 times) in under 3 wks. She ended up catheterised and on suicide watch.
So no, more often than not just phoning a GP or chatting to Samaritans won't help, and we would do well to take people's word as expert on their own situation.