PastDueCredit and overpaid tax credit issue

[Canany1help]

Hi, received a letter from PastDueCredit requesting I pay them an outstanding tax credit overpayment. I don't have an issue with paying anything back but I'm a bit puzzled as I've received nothing from HMRC regarding this matter. I was also under the impression they either take the overpaid balance off current/future claims. I have been over/underpaid in the past and always got letters or they subtracted/added to the next months payment. I'm a bit concerned as it's also solely in my partners name BUT not his name...it has his father's name (both first and middle but my partner has no middle name!?)
Has anyone had anything similar and what did you do?
I've emailed requesting full information of debt/whether the debt has been bought/also full name of the person.

Any info would help - I get very stressed by these letters as I've only ever received a demand letter from energy supplier once and that was due to extreme baby brain! Still stressed me!

It sounds like the debt isn't your partner's. The agency have just done a search and found him with the nearest name. They should have a date of birth for the person who owes the money. It is also worth your partner ringing tax credits himself.

Thanks for your reply DelilahB. Thats what I find so strange it's a joint claim and CTC gets paid to me (he doesn't receive WTC...when he did it was for a tiny amount. But that was absolutely ages ago). I would expect my name to be on there as when it's always been in 'overpayment' it gets put under my name. Its for a small amount so I want to sort it out sooner rather than later cos if it gets out of control I'd be beside myself. A friend of mine owed HMRC thousands in overpayments but they liaised directly with her and set up payment plan etc.