Yes, this appears to be a scam. He told me that I had called him in April and that I told him to call me back....some people probably don't remember who they called in April and might give their address for an estimate. DON'T do it!!! They appear to be cold-calling for business leads.
Missed the phone ringing but later saw this number (310 748 6419) and name (Alberto Adamo) displayed in my phone's history log. Caller didn't leave a message and I didn't recognize the number and I didn't try to call them back. Reverse lookup shows the phone number to be a Gardena, CA number but the person could pretty much be based anywhere if it is a cellphone. By coincidence we are already having work done to our house by a licensed contractor so I'm sure we got on someone's phone list along the way while looking for a contractor and getting estimates. I remember the same spike in this type of call over 10 years ago after going to one of those "Home and Garden" shows (never again!), so be wary of who you give your contact info to, even if they are a "brick and morter" store (no pun intended) - they all seem to share/sell it once they get it and unwanted calls to us continued 2-3 years after we had already completed the earlier construction project over 10 years ago. I suppose with our newest project we can probably expect a renewed 2-3 year annoyance! Anyway after reading some of the earlier complaints, thought I'd add my input