Calling to offer a new hot water system under the "government programme".
Sounded like a scam.
Sounded like every other similar call received up to four times every single day of every single week of every single month.

Caller: Scammer

Asking if I am the business owner and if I've received my free hot water system yet. Sounds like scam.

Rang the number back, voice message said number is not in service

scam

Several calls from similar numbers, ring back and they hang up when questioned who they are.