Magical writing skills needed to add with this letter for sales reason to doctors

I need to write a very strong sales pitching letter the doctors explaining what we can do for the offices and how can we save there office staff time by taking care of preauthorizations for their patients ( Usually DR staff has to do it ) And request them to give us time to come and do 10 minutes presentation (We will bring dinner or lunch for the staff) Why use our services 1-We will never asked you questions once we have you in the system 2-We always have things in stock 3-We will know you personally not another number 4-We take all insurances 5-We will figure it out for you if your insurance to not cover your medicine 6-We will help you to lower your copayment if any 7-If your insurance does not cover your medicine we will figure it out for you And make sure You get your treatment 8-We will never make you wait for anything we will have it ready before you need it 9-We will never ask you for your ID or insurance card 10-Even due to poor weather or has it conditions we make sure that you have your medicine delivered to you at your place of convenience if needed 11-Prescription errors were zero All Our life because each RX go through the process of computers And tested by Doctors of pharmacy 12- We will figure out how to cover over the counter If your insurance don’t cover 13-We will take care of our pre-authorizations for you if any of your medicine need one 14-We licensed to carry Speciality drugs 15-We will do compounding of medicine for you 16-Our guaranteed is the best prices in the town 17-It takes less than one minute to sign up for all these free services 18-Totally hassle free 19-We will deliver to your convenience a place of your choice if you choose 20-You will have a pharmacist access that know you 21-We will send you refills automatically