I'm close. here's the procedure....
If you have past 5 years of bank statements go through them and highlight all the charges taken from your account.
If you dont have statements send a Data Protection Act (Data Protection Act) letter (found in the templates library or on the Govan Law website
www.govanlc.com) to your branch requesting statements, enclosing cheque for £10. (note here, I requested a complete list of transactions and charges since xxxx date and received computer printout, which was a bit of a pain to trawl through but for which I was not charged)
Highlight charges
Add up charges and send preliminary request for payment letter (template in library) this gives them 14 days to reply, which may be by phone or by letter.
If they do not cough up you then send LBA Letter Before Action (templates library) giving them another 14 days.
If this doesnt bring about the required result....i.e. full repaymnet of charges, then proceed with a small claim, information and forms here...
www.scotcourts.gov.uk/sheriff/index
read the FAQ's, read around the forum, ask questions.