HELP! NO REFUND STILL

I e-filed my return late January and was immediately rejected due to my social security number of my dependent already being claimed for the second year in a row... I printed that off and mailed it in early February received a letter in March stating they had received my return and no further action was needed on my behalf and that's the last thing I heard and I still have not received my refund. could that mean I am not getting one?