Caller: They say they are from the government energy scheme - but they arent

The caller is trying to get you to sign up to someone coming to your house and installing things you dont need so they get a kick back - calls are outsourced "offshore" caller cant even tell you who they work for its very annoying

Scam. When you call back the number is unavailable

Phishing Scam. Trying to steal your information using a fake govt energy scheme spiel. Call many times, one after the other until you eventually answer so they can try and scam you.