How do I merge my SSN and my wife's SSN to reflect a single household and accurate balance on the IRS website? We still appear as separate tax households.

The main issue is that we paid our tax bill on my wife's SSN, but when I log into the irs.gov under my SSN, it appeared I was in collections.  We just need to merge the SSN's into a single household so the IRS stops threatening to garnish me.