I had PPI on my mortgage with a building society that did not exist anymore.
The PPI people called and wanted my case
NO wonder at 30% of anything they get
You might have been happy Macs with someone taking your dosh for doing 2 hours work (in your case you must have been due over 12K)
I was not and told em to do one.
In all honesty - I would rather get nothing than fill their pockets with my actual money.
A bit of research (not hard) I found that the original building society had been bought out by the Halifax
I went on the Halifax site and they had a section that just deals with PPI.
I had long lost the paying in book - no online banking in those days and no idea what the account number was.
All I could supply was my name and the address of the property.
They had to physically go through old paperwork (from the old society) but they found it and I was paid a decent lump (with no 30% taken of)
6 months after I had been paid out, I received another cheque for £122.30 and a letter explaining that I had left £14 in an account and it had accrued interest. :)
MY advice - do your own digging before letting the leeches have a go. They have no more resources than you do.