Md. Code, Courts and Judicial Proceedings § 3–1306.1

(a) In recovering or attempting to recover damages arising from an alleged act of shoplifting or employee theft under this subtitle, a person may not:

(1) Use or threaten force or violence;

(2) Communicate with a responsible person in a manner that reasonably can be expected to abuse or harass the responsible person, including communicating with excessive frequency or at unusual hours;

(3) Use obscene or grossly abusive language in communicating with the responsible person;

(4) Claim, attempt, or threaten to enforce a right with knowledge that the right does not exist; or

(5) Use a communication that simulates legal or judicial process or gives the appearance of being authorized, issued, or approved by a government, governmental agency, or lawyer when it is not.

(b) A person who violates this section is liable for any:

(1) Actual damages proximately caused by the violation; and

(2) Reasonable court costs and attorney’s fees.