SJ, Rule of thumb, never, never, never allow someone that calls you & that you don't know, to ever come to your home. You said you didn't get the companies name & it's more than likely that they didn't give you a name & if they did, it's probably a fake name. If you want to know of a good air duct cleaning company or for anything, your best bet is to call the Better Business Bureau & ask if they have a list of places in your area for you to call. Be safe.
469-353-1391 call me said his name was Jerry, and he was returning my call about my air duct being clean
Told him, he didnt talk to me or any one in this house about it and hung up on him
called a few minutes ago. Interesting that the caller ID said this was a cell phone number. There was no sound on other end so i just laughed, hung up and immediately blocked the number.