i didn't answer, they didn't leave a message.

Same as above. I missed the call, they didnt leave a message.

Wanted to upgrade my water and heating. Hard to tell if they are legitimate considering how much delay there is in conversation, meaning they are overseas. Didn't ask for any personal information though (they had my address already, but these days, who doesn't if you've ever signed up to anything online?).

Scam caller spoke with foreign accent phishing for personal details

claimed to have a $2500 rebate on a new hot water system