You need to create an offer, you need to check out your competition see what offers they got on and just best the competitions offers. You then need to create sales funnel/landing page asking to enter name, email, phone number in return for a voucher code Your FB ad copy got to be clear show discounts any free offers, link add to landing page Depending on business on the info you collect name and number if you need to call them its best to call them within 15 mins of entering their details. Your offer is the best in your industry, your giving them an offer they just cant refuse, your sending them down a channel focused to get their details (your landing page) Don't over complicate your Facebook ads, create different simple ad settings and test them Focus on your offer and creating a channel that focuses the mind to do one think, enter details to receive a voucher code to a really good deal.