I keep getting calls from a Diversified Debt Collection Agency. XXXX. I do not owe money to know one. All my bills are paid up and on time. I am on payment plan for my last bit of medical from my surgery. I want them to stop calling. I have never gotten any paperwork in the mail. I have perfect credit and have to because of my job. It better not be effected. If it has been someone is getting there XXXX kicked. I am sick of this. I want proof I owe no money and a letter stating my credit has not been effected.