I have a brand new house, built less than 2 years ago, so calls like this, especially ones claiming to have worked on my house in the past, are very funny.
Calls me multiple times also. Never leaves message. When I call back, just hear music and nothing else. I searched the number online and found out the number is registered to someone by the name of Christina Branch in Burbank California. She also has a second number 818-641-6048. When I called this number, someone answered and introduces themselves with the company name IG-FirstClass.net. When I searched that online, it is some order tracking company.