Hello Mark and Bob, 
Midge, Leisa and I thank you sincerely for your efforts on our behalf. 
As I think I have said previously, I have rarely encountered solicitors or a law firm like you. 
You have been extraordinarily diligent and capable. Your effort and your commitment to your clients is, in my experience, unparalleled. 
What makes your professionalism and ethos more remarkable is that you have worked for years on this matter and not once requested payment for your work. 
Furthermore, when you finally billed us it was for a paltry amount relative to your work, effort and costs. 
I never thought I’d say this about lawyers, but you are exceptional. 
Once again, our sincere thanks and good wishes.