Hi, I can give you advice due to personal experience.
My husband and I had horrible credit,we couldnt get credit at 7-11 if we wanted to!
But, I dug and dug and dug on the internet,and committed hours upon hours of rearch how to clean up our credit.
I have letter,you send to the CREDITOR not the Credit BUREAU..all the CB will do is call joe blow department store and ask if a valid debt,they say yes,and the credit bureau leaves it on...they end.
I went over and beyond that...I had a dillards credit debt on my credit report that was 15 yrs old,and it changed hands over and over again...to me,the more the merrier!!
By law, the ORIGINAL creditor has to provide you with the ORIGINAL contract you signed taking on this debt....credit card,etc...the older it is,the harder it is for them to provide this sort of document..why? Becuz they chuck paper and imput it on the computer...and your signiture is no more...
My score,went from 400 to 650 in over a month..true story.
I worked on it religiously!
Once removed,by law,they cannot put it back on....again,the original creditor has to provide the original contract you signed.hey have 30 days to do it..they take for granted your not smart and will just let it go...I however wanted to be smarter then them..lol.
I have letters I retrieved off credit repair sites,and they work!!
I sat down,ordered all three reports and mailed this same letter to every single creditor...THEN---you send the same letter to the ATTORNEY Generals Office,that is in the same state as the creditor,and they too follow up on it,and trust me,when the Attorney general is involved,they fix it fast...
Its time consuming,but well worth it!
Hope this helps!