Consumer Redressal

I booked a three BHK independent floor with Builder BPTP in September 2009 at Faridabad in sector Park 81 & I paid Rs. 6 lakh to BPTP in two installments vide customer code no 122698.Builder remained sleeping for about 3yrs & then he allotted me 2BHK unit A-107, 1st Floor on september28,2012 in their other project Discovery Park in sector 80 vide customer code no 143569 and builder charged me 25% of cost & executed an contract agreement for the same on dated 12-11-2013 but on 21-11-2013 BPTP sent me a re-allotment letter by changing my unit from A 107 1st floor to A 1404 14th Floor without my consent. I contacted their office personally on 31-12-2013 and put my grievances stating that I’m a heart patient and requested not to change my unit but no heed was paid to my request. Kindly help me in retaining my earlier allotted unit.