Terrible Home loan division

I am applying for a home loan and even after being a client with FNB for over 15 years, and already financing a home through FNB they have been by far the worst bank to deal with whilst applying for this second property.

I have provided all necessary documentation and have tried contacting and communicating with them time after time and they are slow to respond and are seemingly trying to either ignore me or refuse to give my application any proper attention.

Every other bank has returned with offers for the property to be financed in full with decent interest rates and yet FNB has decided that they will not cover the full amount.

I have requested a re-evaluation (which has to happen soon as my current offer to purchase only has a few days left for all of this to happen) and after a week of waiting for feedback and being ignored their credit department has rep**** and refused to do the re-evaluation noting that they needed a CMA to proceed. I had already provided the CMA a week before -twice-.

I've always banked with FNB and I was very happy with my current home financing through them but at this rate I feel like I'd rather just transfer all my accounts as well as my current bond to another bank just to get away from this lousy service.