Losing my dream home because of FNB

Worst client service ever. I submitted an application for a home loan 2 weeks ago, I informed FNB if I do not get my final quotation before the 5th of August I my offer to purchase is no longer valid. Every mistake possible has been made, I received my first approval in principle, the ammount, property details and attorneys was incorrect. That put us back another 3 days. Then the incorrect contact details was entered for the valuation and that also happened 3 days later that it could have. Now it is the 5th of August and still no final quote, the best answer I can get from them is they cannot promise me to be done today so that means that I will lose my home. Thank you FNB for the worst experience ever and for losing me my dream home. I would not recommend anyone to bank or get a home loan with them. I moved to FNB from Standard bank and it is the worst mistake I could make.