Cease and Desist Letter Writing

I'm seeking an experienced legal professional to draft and send a cease and desist letter to a former friend. This individual has been spreading false statements about me on social media and in our community. I have screenshots and photos to support my claims.

What I need:
- An expertly written cease and desist letter
- Sending the letter on my behalf

Ideal Skills:
- Legal writing
- Experience with defamation cases
- Understanding of social media law