I dont have a trade line for this debt, its been 7 years. I froze my credit about 3 years after incurring the debt because I didnt pay it and they hadn't yet inserted. About 2 years later I got a collection call and asked for validation. Then another call 3 months later from a different company. They eventually sent a letter, I typed "please validate" on a piece of paper and mailed that in. They sent me a copy of the signed contract, which I disputed, and I haven't heard anything in almost 2 years now.
As an unintentional perk, I don't get any junk mail now. No pre approved offers, nothing. Days go by where I don't get anything now. I love it.