You said you didn't ask them to validate so they aren't. I may be wrong but I think you validated by offering to pay, unless you specified that you were not validating in your wording.
My only experience with them is paying a settlement just last month (I think it was just a little over 50%) but it hadn't gotten to my report yet. They were good about keeping their word. They never reported it.
Just checked my notes and the settlement they offered and that I paid was for 40%. I don't know it makes any difference, but it was from the very first call they made to me before it ever went to my CR, and I agreed. They faxed me the offer in writing no problem, and I paid them immed once I received an email stating yes this won't be sent to my CR.