After you file

My ammended return has been processed as well as adjusted.ive talked to several Ladies whome were also very nice told me it shows where my husband owed back child support and I owed nothing I filled out an injured spouse and had to ammend my return.i was told that even though I filled injured spouse form that the child support office took all the money so if that's the case why bother with that form I'm so confused I just need to know why I received a letter stating I would get bacK $3,018 ok then when???