Do you recommend collecting lead forms directly from Facebook? How do you utilize important but questionable photos within Facebook ads?

I've got a client who is doing this diabetes treatment that is unlike any other. It's been around for 20 years, but it hasn't been promoted very well. And, when you're promoting stuff on Facebook, especially in the medical world, the ad got rejected.
A number of times I kept kicking back and it finally got approved and this client, they don't really want emails. They want phone calls...