Hi, Thanks for the replys the dca is Capquest its from an old egg card

Hi, am new to forum and could do with some help. I sent a cca request to a dca that was chasing an old debt after a few weeks they replied saying they couldnt provide the docs requested and as such would not ativley look to pursue this debt, after which I stopped payments on my debt plan. On checking my credit file a couple of months later it seems they have registered me as missing 2 payments, can they do this and then issue a new default? I beleive a default was registered against the old debt which is now coming up for 6 years so I dont want another one. Is there anyhing I can do? Any advice would be much appreciated.