Law

Hi, I hope i've posted this in the right section.
My daughter & son-in-law were offered a taxi business [hackney plated vehicle] to buy, they went to their building society on Tuesday to borrow the money, explaining exactly what they wanted it for. They were told the only way was for 2 separate loans [as it's quite a large amount] 1 in each name. All forms were filled in & signed, both loans were granted & they were told the money wouldbe in their account within 24/48hrs. They then spoke to the chap selling the vehicle agreeing to purchase it from him,[they even received a letter this morning confirming the above]. By Thursday lunchtime as the money hadn't been deposited into their account they phoned the manager, & were told b4 money could go in the head office needed sight of the trading accounts,which were duly given that same afternoon[showing an excellant profit] & the money wouldbe released. Now at 16.50 this afternoon they have been told they have to show their own accounts for last 3 months [as this is a new venture for them they haven't got any this was explained at the 1st meeting]. They managed to speak to the lady that had dealt with them on Tuesday & although she is really upset & apologetic & doesn't know what's going on all she can suggest is to try & borrow from somewhere else. They have arranged an appointment with the manager tomorrow at 9am & asked if i will go with them for support.
Now to the question. Have my daughter & son-in-law got any redress against the building society ie breech of con
tract?
Please any advice would be appreciated [my daughter is in tears]