Barclaycard charges refunded

[ktlou28]

I have recently had success in claiming back £505 in charges (£12 over limit / late payment fees) from Barclaycard dating back to 2006 which is great. But in my complaint I requested a refund for all charges to be refunded dating back to when my account was opened in 1999 ( as I believe these were the more hefty £35 fees) but they have said they cannot provide this info and do not have too. Is this right? I feel I want to take this further as these feed before 2006 were so much more than the £12 ones, what I would like to know is anyone who has has success in claiming back charges before 2006 from any credit card provider & is there a letter template somewhere that I can use to reply to them regarding this? Any help greatly appreciated. Thank you