Itr form slection

i was in employment from 2011 to 2014 in medical collage .,my income sours was in  the form of Stiphend.in 26As my income has been showing for 2011,2012 under section 192,but for 2013-14 my income has been shown in sectoin 194c,

for 2011 and 2012 i have not file itr,but i can filr itr for financial year 2013-14,

my confusion is that which ITR I should opt for filling my income for A Y 14-15 ,since in 26 As my income showing u/s 194c,but employer issued me FORM-16

Further.,for financial year2014-15 i has been in working in 2 places as doctor  ,i received 2 form 16 ,in which my tds has been shown Rs 20000,but in 26AS Tds amount has been shown only Rs 12000/-, 

I have Intimated the employer for Revised tds return ,but they does not responding me and not revised Tds return .plz,guide me how can take action against the employer