Wesbank exteremly slow and inaccurate

Wesbank is completely missing the bus. Apparently issues with my payslip amount and bank account amount not being the same while I've sent the exact same vehicle finance documentation to MFC and ABSA and have their quotes on the table already. Wesbank finance application was done on Monday lunchtime already while the others were done only on Wednesday... Shocking service and highly unacceptable. How am I suppose to negotiate a time sensitive price with the seller without any support from the finance institution. I don't want to do business with a company like this. In fact this experience is leading me to close my FNB account which I had for 9 years.