Collection Agency called Diversified Consultants specializing in old utility debt, phone bills, etc. They have the wrong person but keep calling.

Collection Agency called Diversified Consultants specializing in old utility debt, phone bills, etc.   They have the wrong person but will not stop calling.

The next time they call, demand a legitimate, physical address in which to mail a cease communication letter VIA certified mail with return receipt requested. If they refuse, let them know you will be seeking legal counsel who will get this information for you and will be filing a lawsuit against them for harassment.