Jay Mon,
Catcha does not have an automatic email response that directs you to call their number. I know because I set up their email. Any response you received was handwritten. If you asked them to call you, maybe they responded for you to call them since you were already conversing by email. And since you are already exchanging emails, why not continue exchanging emails to secure your reservation? That is how the overwhelming majority of reservations at Catcha are made. Rather than asking why they couldn't call, a better question would be why should they call when you are already communicating by email? It saves money for everyone.
