my spidery scam instincts were also aroused a few days ago.
Call after call on different numbers, to my only phone, a mobile. I copied the numbers onto the internet and they were not from any businesses I had dealt with, deletions and blocked all numbers. Then they tried `number witheld` and I ignored that, it rang on number witheld at least 3 times that morning. I went onto settings and blocked `witheld numbers`
Later a message, said to be from my bank saying to ring xxx number wrt an attempted purchase. I looked up my bank number in my personal notebook. Rang them, spoke to fraud department and yes it was a scammer for all calls. Card was cancelled and I now have my new card
Be safe and listen to those instincts, which is what action fraud had told us to do. The upshot is that now I will only answer known contact numbers and will use cash for supermarket and local shopping
My ds, who works in banking, online cyber stuff, said he was almost caught out some months ago
Blooming awful devious scammers