Hello Marszab, and welcome to the forum. Please don't automatically assume that your treatment failed because of this, when treated with the new DAA meds (such as Harvoni), having low-level detectable HCV RNA at the end of treatment does not preclude cure. Please read the conclusion of this study for instance
www.ncbi.nlm.nih.gov/pmc/articles/PMC4834854/
To know the correct result of your treatment, you have to take the test 12 weeks after finishing treatment.
Also even if treatment fails the first time around (happens 5-10% of patients), re-treatment is entirely possible and very successful (different medications are used).