Dumbphone with WhatsApp?

Quick question for you guys, and I know this sounds like a contradiction, but I’m looking for a dumb phone that has only WhatsApp as an additional app.

The long explanation is that I need WhatsApp for my business but I really want to get rid of social media of any kind. I don’t want to be flooded by social media anymore, but I do need WhatsApp to see when my customers are messaging me

Any idea? Or is this just a pipe dream of mine