AARGON Collection Agency XXXX is now continuing to harass me via my cell phone for a {$150.00} debt that was paid to another agency, XXXX XXXX XXXX XXXX on XXXX/XXXX/2015 through their XXXX XXXX XXXX XXXX XXXX payment website. The original debtor is XXXX XXXX Hospital XXXX. I have already filed a complaint against both XXXX XXXX XXXX and XXXX XXXX Hospital in XXXX 2015 for this very same problem. Please refer to the following CFPB case number : XXXX. Either XXXX & XXXX and/or XXXX XXXX Hospital has now sold this note to AARGON instead of acknowledging the fact that they have been paid as of XXXX XXXX, 2015. I also received a bill dated XXXX/XXXX/2015 from AARGON still showing an amount owed of {$150.00} to XXXX XXXX Hospital. The harassment from XXXX XXXX XXXX has stopped but it seems to me that XXXX XXXX Hospital continues to break the law by trying to collect on a debt that has already been paid for.