Lennar

I have recently signed for a home in Oswago with Lennar at the time of signing I have all my financial qualification disclosed and I offer 3.5% down using FHA and nothing have changed in my income but after signing I have been told something totally different from Lennar financial office that I have to put down 34000$ in order to get the house I feel that is not right and is not committed to our agreement please correct that in a way that satisfy me and my family to get the house that I did signed for

Thanks