Bad service

I app**** for building loan with FNB and completed the whole process. An estimated amount conditionally approved. However their evaluation Unit told me something I don't understand even now. I was told that "the contractor under quoted me". When I ask, what to do now, talk to your contractor". They were also confused as I was. Banks really are a stumbling block to better life for black people. I work and was not gonna have a problem with repayments but just giving an excuse like this. Bad service FNB.