Can i get some done for slandering me on facebook?

[sewrobb]

Only if you are prepared to go to Court and sue for Libel and/or
Defamation of Character.

Slander is verbal and must be said in front of a third person.

Both Libel, Slander and Defamation cases are very expensive to
begin with before they even go to Court and if you lose that will
cost you hundreds of thousands of pounds as you will have to
pay the other sides costs and expenses.

In the cases involving FB nine times out of ten it is usually a
heated argument over something stupid.

My suggestion is let sleeping dogs lie and just block the person
concerned.