Monzo on Watchdog 17/10/2019

[kolok]

Found this

I assume they will also block such calls from a specific non withheld number

Slow response times

No, this isn’t true. If someone is harassing us and calling over and over again, we can in some circumstances enable a block of withheld numbers (people who engage in this behaviour almost always call from withheld numbers) but this would only be temporarily and used if we had no other recourse.