Refund not received

I have filed my ITR for the financial year 16 17 within due date but since there was a mismatch on account of fixed deposits interest a notice was received and accordingly returned was revised till now return has not been processed by Income Tax Department it where as I had e e verify the return at the same time after uh fighting grievance the resolution provided by the department is that it is under process I would like to know that generally how much time it would take to get my refund