energey spam retailer - waste of time

7 calls in one day. I answer they hang up or long silence before I hang up. Once I was even driving and through blue tooth answers with usual “ hello. Your on speaker phone” the hang up was quite rude and loud slamming of phone down.

Rang 5 times today. On blacklist now. What a nuisance.

Several calls during today and yesterday, leave no message. No idea who this might be.