It might be, fire off a certified letter to his attention stating the fact that despite you asking he not call you at work he persisted anyway violating your rights under the federal laws pertaining to debt collections as well as your state laws and if they attempt any further actions after your demand they cease and persist you will counter sue and name Ramos personally liable as well as his scuzzy agency for punitive damages
See an attorney first consultations are free for guidance

It's collections, not telemarketing.

CALLS EVERY DAY. asking for debt collections. Somehow got my cellphone too and keeps calling my cellphone and home phone. Dude needs to do something good to the world than harassing people.