<prompt> Human: I switched my cellphone from Verizon to att about 6 months ago. I paid my last bill to Verizon, and verified on my online account that I didnt owe them any money. Last week I got a letter from a collection agency called Convergent saying I owe Verizon about 150 dollars. I was never contacted by Verizon about this debt, and when I call Verizon, they wont talk to me about it. As soon as I mention the collection agency, they transfer me to the convergent people.Meanwhile, the convergent people cant even tell me what the money is for. Ive asked them several times to provide an itemized bill, and so far theyve been unable to.Im totally willing to pay money if I owe, but this seems sketchy. Verizon claims I owe money, but wont talk to me. Convergent says I owe money, but cant say what for. I dont want them to fuck up my credit. Should I just pay them to make this go away? Do I have any options?I should also say that financially, I could just eat this and be fine. I could pay this and not miss any meals. Its more the principal of the thing. I dont want to get bullied into paying something I dont owe. But if its between messing up my credit, and just paying it, Id rather just pay it.  <response>: Ask for them to send you proof of the debt in writing within 30 days and not to contact you until theyve supported their claim. That should satisfy them also if they start reporting to the credit bureaus you can have the debt removed due to no proof of ownership. 