>would not even be able to book my Dog in to the Groomers because they won't answer the phone and only respond to Whatsapp.

Good luck getting businesses to move away from Whatsapp. I deleted my account and was able to get friends and family on Signal, but thankfully I don't have any businesses I interacted with that used Whatsapp (or Facebook). I might be missing out on products and services... But hey, at least I don't know what I'm missing. :)