4 charges to my checking account that was paid on Nov 7,

On Oct 5th there were fraudulent charges in my checking account so my credit union changed my account from S6 to S6.1 so all the purchases that I had made prior to Oct 5 that were still outstanding were denied by the credit union.  Finally on Nov 7 I was able to pay for the 4 charges.  However, I keep getting emails from TRS Recovery that I still owed them, I would call them and they told me that I didn't have any balance on my account.  yesterday I got 4 emails from TRS Recovery that I had not paid the 4 charges and they wanted to collect the money...long story short I faxed proof to them that they had been paid on Nov 7 but they said it would take another 30 days to figure this all out.  What's to figure out.....I paid the charges