they charged you for it..no sign of a refund in the statements.
quite typical of welcome of that era to remove all the vehicle related stuff as they were trying to get approval to GISC and that was one of the things spotted by the regulators ...they were to that point making gap/mec/col compulsory.
notice also it says insurance default..which means they were still making PPI compulsory and did so in certain geographical areas deeming it a risk area until they eventually got GISC approval when they then too removed the compulsory PPI as GISC said they couldn't do that after arguing for several years about it with the regulators .
its all in archive posts here from Postggi.
That could just be a phishing letter.
It is very important that you write to them with your current address (by post)
Use free proof of posting available at the post office
All you need to do is quote you're name and account number, then
Dear Sir Madam,
For all correspondence my address is now ' xxx yyy'
Please do this today.
Also it is imperative you keep the postage receipt and proof.
Don't touch them owe me £500 since January 2019 make excuse after excuse. Seem they always have software problems sending money out. Keep saying they will call back or email nothing been chasing it now for 6 mths the phone staff always have the same banter we will chase it up and get back to you then nothing!