Who has Home Again as their pet retrieval system?

I just tried calling FIVE times to order a dog tag. Each time I would get to the section to order a tag, the line would go busy. This really upsets me. What if I'm trying to report a lost dog? Am I going to get a busy signal?

I just sent them an email telling them I find this unacceptable.

Is there any other pet retrieval system other than Home Again?