How do I get a 2nd phone number for guests to contact me?

[Scott K.]

I'm realizing as my business grows I don't want my personal information out there, just had my first psycho guest after 150 bookings... I guess it was bound to happen eventually!

I've already made a gmail account just for communications, but how do I set up a 2nd phone number on my phone? I'm already using google voice for my other business, so I need a separate app (since google voice doesn't allow 2 numbers with different voicemail messages... weird lack of an obvious feature)

I've found some apps that charge about $40 per month for the app + the 2nd number. There's gotta be something cheaper, right? Texting is necessary as well.