What should you do when the CCA agreement is found?

[Danica]

I’m scared to ask Debt Collector about CCA (not sure if it’s not too late):
If the creditor has started a court case (I have been sent a Claim Form) and I may have hoped that the CCA agreement could not be found. But what if it was found. That is not a possible defence so I would need to think if I have another defence. Does such exists???

[Danica]

Omg now I bumped into CPR 31.14 request on this forum. What are they?! Which one is best to send to debt collector?! Which one won’t get me in trouble?
if I asked for both of those, will they have evidence against me. Am I asking for trouble?!

please help