If anyone is getting lots of these, it’s worth (re-)registering your number at the Telephone Preference Service:
https://www.tpsonline.org.uk
It stopped 99% of these calls for me, I believe it works for landlines too.
Weirdly, after a number of years I began getting them again, but...
My technique varies dependent on the type of call. If I don’t have any time pressure at my side, then (for accident/insurance calls) I go past the robo-caller to a human, and then go into ever increasingly gory details about the car accident that I have definitely had that wasn’t my fault...