on 07-08-2019 19:10
on 07-08-2019 19:23
Lots of this around at the moment.
Just block the number so it can't call you again.
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)
on 07-08-2019 20:40
Premium rate number, do not answer it. Block as suggested.