Nedbank Home Loans Injustice

I had a pre approval from Nedbank Home Loans in Dec 2017 and 01Feb2018 which is clearly stated as a mechanism to take with you when house shopping to show the seller how much you're eligible for. Needless to say the bank confirmed my credit checks as positive and affordability to be also positive. Now upon submitting the required documents I get an email with a decline letter from Eugene Drotskie, no clear reasons have been specified for this. I'm not sure whether they are sething only certain kind of our society because the two major factors I've passed. What appalls me the most is the fact that I confidently communicated to the seller and agent that pre approval nonsense. The seller rejected another offer on account of this fallacy and now I have to go back and face them. What about the penalties I'm going to pay??? What's going on here? Can the truth about who Nedbank services finally come out please!!! Ref: ********** -4