Received a phone call from CAC on 11/14; I returned their call on 11/15. The woman told me I owe them $1197; I said oh that's nice, how about sending me verification that I owe you this debt? I gave her my mailing address - they "didn't have it" - and told her I would not make any arrangements until I had proof I owed this debt. She kept saying, "Well, we're sending you a letter but what are you going to do about paying this?" I told her again, when I have proof, I'll contact you and pay it.
Today, I receive a letter from them dated 11/21 (does FDCPA specify 5 days or 5 business days?).