Wordpress referral program, design and tracking

I need a referral program installed on my wordpress website. This is how I want it to work. I want to have a webpage that describes how my referral program works. It will be something like this. “ Give $20 Get $20 Referral Program” Once visitors read about the referral program they can sign up for the program by entering their Name, Email and Phone number. I want to have a way in my admin area where I can track all the people who sign up for my referral program. Once people are signed up for the program I want them to be able to refer people to my business by email and by social media like facebook, twitter, Instagram, etc. My business is a offline business so there doesn’t need to be any online tracking of conversions. Maybe there is a coupon code that people send to their friends. When their friends call with that coupon code I enter it in the admin and it is a conversion for the person who referred. I can then give them credit in the form of a check mailed. This is my idea their may already be a plugin that does this. I need someone that can set the website up to my requirements. Also their will be some web design required. We need to build the referral page. We can use my current website design. Also we may need to design the email templates for referrals. Please bid accordingly.