Like pulling teeth …
Had previously used TFTP and although slow the process did get me some compensation.  
Then received an invite to say they can look a NatWest account for me for undisclosed commission.  So completed the forms back before May 2023 (I'd deleted older emails).  Got nothing except "we are chasing your bank" style emails for about a year.  Finally the documents came to me so I forwarded them on 3 months ago.  Was still getting the "chasing bank" emails so sent the documents again. Still more "chasing the bank" emails but no forward progress.  Two months ago complained (but didn't use the word complain) so it was ignored despite it meeting the FCA guidelines on "dissatification" and so complained again yesterday officially after another month of silence.  Today got an email saying "Oh we've had a look at the documents and we can't help".  What a waste of time!  Dreadful service, would never use again or reccomend.  
Reply from The Fair Trade Practice