Pmay reversal

Hi Sir , My name is M Saibrahma . My query is about PMAY amount . I have taken a home loan from bajaj housing loan with scansion amount of 52 lacks for 2 BHK flat in BPS twin towers in mean while i got an PMAY amount of 2.35 lacks and it was created in bank account. Now the construction was in 60 % completed and got an idea of 2 BHK space and due to size concerns i have shifted to 3 BHK in the same Appartments. As bank said that will come under new property and need to close the old loan and need to go with a new loan. So previous loan outstanding was 23 lacks which includes PMAY amount . Now for the new loan account i got an approval for 50 Lacks .As they said we need close the old loan with the new loan account ... Here my question Bank was saying the PMAY amount which got from govt to the bank that will be reversed to govt and cannot adjusted with the new loan account they r saying... Is this correct? If not what should i do? Where should i complain this issue Please help me out ... Thanks and Regards M Sai Brahma