Consumer Redressal

I have an agreement with two builders for purchasing a ready to move apartment in a complex along with an open car parking space available inside the complex for Rs. 29,74,191.At the time of agreement I have paid them Rs. 5,94,191 dated 24/08/2013.The 2nd installment I paid Rs. 8,18,815 dated 11/01/2014 as one of the developer has left for USA.The rest of the money will be paid by State Bank of India as they have sanctioned a home loan for me of Rs. 15,61,185 dated 19/10/2013.In the agreement it was written clearly that registration cost will be borne by purchaser. Now at the time of registration the developers of the apartment is telling that they will appoint a lawyer who will do the registration procedures and asking me to pay additional Rs.56000 cash (without any money receipt) as that lawyer fees which is not mentioned in the agreement.They are not allowing me to take my lawyer who will do the registration procedure at nominal fees. Is their remedy I will get from consumer forum?