0-15 minutes..... What a joke! I called the number and did not get an answer when I was locked out of my home. About 10 minutes later someone called me back. The man asked for my phone number and said he would have the tech call me right back. About 4 minutes later the tech called. Gave him my address and he told me he would be at my house within 15 minutes.(now about 20 minutes have passed) After another 20 minutes the tech calls again and tells me he is running late.... At that point I tell him to forget it because I could be waiting until tomorrow for him to arrive. After that I proceeded to check my windows, which I should have done in the beginning, and found one open which my son could crawled through. Bottom line, don't call them unless you want to wait half a day or more!!'