Service slower then a sloth

I have app**** for private sale finance with WesBank, the first response you get is an automated response saying that they will give you an answer within 24 working ours. My fist application was done on 8 April but then the car got sold as I did not get any feedback from WesBank, Then I did another application on 12 April and the seller waited until 17 April but again due to no feedback from WesBank the car got sold, I called WesBank to find out what the hold up is and they said they are still busy with checking my application and preparing my quote but if I find another car I can just call and update the details on the existing app which I did on 18 April, but still two days later (20 April) I have not received anything back from them even on the first application, and I'm on the verge of loosing yet another prospective car.