Reclaiming Bank Charges

The statements came through the post today so I got a load of work to do asap.
Have only checked my accounts from Feb to August 2000 and its a cool £1000 so far in bounced Direct debit charges.
Fees ranging from £30 to £90
Anyone who knows me will know I was in a lot of touble financially for a few years and there's the reason in 7 months I lost all that to the bank.
Although it has settled down recently can you imagine what 6 years of charges could amount to.