burn bridges
Intermediate (B1)informal
To ruin a relationship permanently.
"She left the company so rudely that she burned all her bridges."
Hear it in context

Why American Airlines Stopped Making Money
Wendover Productions · 16:53
and the consequences of burn bridges undoubtedly still remain.

“Complete FAKE!” - Erika Kirk, Bioweapon COVERUP, Elon Musk & $39 Trilly BOMB | Clint Russell
Julian Dorey · 73:30
these guys and I oftentimes burn bridges and I,

"They Fired Me to Cut Costs—Then Realized I Own Their Entire Security System | $122K Revenge Story"
The Payback Office · 31:35
You don't want to burn bridges over a misunderstanding.

Race For The Wool Challenge In Minecraft w/ @Yukiwaru
JeromeASF · 20:39
And all you know how to do is burn bridges, Luke.