It must be upsetting and very invalidating to be dismissed like that. When I've been in crisis I've had people say I need to just keep trying with distractions when I've explained it's not working, so I truly sympathise.
Could you maybe phone someone else like the Samaritans? You did really well in phoning breathing space. Don't let this experience put you off phoning again. Not everyone will be dismissive. Keep talking to us to. You don't have to deal with this alone.