ebay collections question

I used ebay for a few months back in 2004. After that I never used it. Since then I changed my e-mail address and phone number.

I got a letter from a collection agency yesterday called Convergent Outsourcing
for a bill of $55.85. I didn't think I owed ebay any money, so I logged into ebay and I did owe that exact amount and paid it off through ebay.

However I now fear this collection agency is going to want the 55.85 or put it on my credit report. I checked "Experian" today and there are no delinquent accounts from Convergent Outsourcing, however they do show up as looking at my credit a few months ago.

I Googled Convergent Outsourcing and they have so many complaints, etc., but on the letter they sent me--they knew the exact amount I owed ebay as well as my username.

So I contacted ebay and they said pay the bill, which I did last night. But if ebay sent this to an outside debt collector Convergent would never know and possibly still give me "Account in Collections."

What should I do. I mean it's only 55.85, but I would hate for this to show up on my credit report. Like I said I already paid ebay last night.

I thought once a company (ebay in this situation) sells a debt to a collection agency that the collection agency owns and collects on any payments.

I am confused. If I have to pay Convergent the same amount to protect my credit I will.

Just Google "Convergent Outsourcing" and you will be

Thanks for any advice.

Thanks!