They have released a cheque and I am waiting for it. Monday is deadline set by them ironically, I expect them to be late and will phone or email on Monday and threaten bailiff's.
My advise is to stop trying to reason with them on the phone they will just waste your time with we will look into it etc.
If they have sent their final response then it is time to start court proceedings. don't worry about the fact it is back to 2002 mine was 2004 so not that different.
they will say its barred due to being over 6 years but this is not true, its 6 years from when you realised there was a mistake in your case this was 2011, I stated 2007 in mine as that is when I was aware the PPI was not part of the service and was actually voluntary.
There is no need to over complicate things in the POC part of the claim, just state the fact that you did not want it, did not ask for it and it was added despite you saying no.
write and ask for a transcript or recording of the phone call and they will write back saying they have nothing.
Good luck keep off the phone with them until its their solicitors you are communicating with.
One other thing to note is that as a LIP you can claim £18 per hour (I think check thread) costs so make sure you keep a diary of how much time you spend on writing letters and emails etc, if they phone you or you them note these times down too and keep a note of postage costs etc to claim back too.
I claimed over £400 in costs so it does add up.