if you had applied for loan of Rs 14 lakhs only bank cannot sanction Rs 18 lakhs
2) if you had signed blank papers wherein loan of Rs 18 lakhs was filled in you would be liable to repay Rs 18 lakhs with interest
3) bank would have disbursed Rs 18 lakhs to you . how can builder with draw Rs 4 lakhs in your name .
4) did you execute GPA in builder name ?
5) do you have any written assurances from builder that he will pay the Rs 4 lakhs loan
6) if builder has given assurances in writing sue builder to recover the 4 lakhs with drawn by hi m
7) you are liable to repay 18 lakhs to pay .
8) if you fail bank will auction property to recover its dues