Text inside: Thanks for your great service and caring attitude towards me. Now that you have made me happy, at least three people will get to hear of it. They may even become your customers.
With satisfied customers on your side, you don't need salespeople or advertising agencies to promote your products and services. Satisfied customers will recommend you to others.
Not only am I likely to stay on with your company, but my business with you shall also increase. What's more! Dealing with me will become increasingly more profitable for you. Once word of your exceptional service gets around, people will flock to you automatically.
So, keep up the good work!