MBNA and Aktive capital default notice issue.

Hi all . Looking for advice regarding Default notice. I received a partial settlement offer on 2 accounts from MBNA in 2009. This ran until sept 25th 2009. My account was defaulted on 30th august and default date on letter was 7th sept 2009. The default notice contained a account number that wasn't my account no.cut along story short MBna sold one account and took me to court for the other. I defended a summary judgement and came to a settlement with MBNA(restons).this left the other account outstanding. I made some payments to the Dca and they then sold said account to Aktive capital. These payments ceased and I ignored request for payment as it was in dispute. Took me to court last week and I was confident I could succeed ;((. Very wrong!! Judge gave me nothing . Struck out my original default notice and stated the claimant had the correct one !! I rang MBna today and the lady said my account number would change on the de fault notice ? Hence I have the original with changed ax no and claimant has mock up with original ac no ?? WTF HELP. Thanks in advance

MBNA and Aktive capital default notice issue.