Syed in Calgary

I am building my house in Redstone Calgary, AB with Shane Homes. In the beginning I was very happy but I don't like Shane home any more. Shane homes gives you price grantee but I found it is just a joke. I talked to Area Manager up to the president but no one try to take any action everyone is trying to pass the time. My price would be $406036 for a 1554 SQf house ( before extension and upgrade) Now a days the price of the same model hose on the same lot (1554SQF) is only $ 380000 but they are not giving me price difference. They just trying to explain me the house base price is still the same. First of all the Lot price never changes according to the builder. If lot price remain same how come new customer paying less amount then what I will pay for same model of house in the same area and same home next to me. I have already paid 5% to builder. I don't know what else I can do to get this resolved. Please advise me.... Thank you Thank you A Redstone customer (Calgary, AB)