Wow... didn't imagine that the sale representative is so pushy.... In my opinion, you should hold of the S&P signing and delay to an agreeable date. Like aurora97 mentioned, 2 weeks will be more than sufficient to get loan offer letter.

Currently you already give 4k, if bank not approve, worst scenario is that you burnt your 4k. Imagine that you sign SnP and pay 10% downpayment, if you don't get a loan, that will be your problem and you burnt away more money.

The sad truth is law is one thing, execution of the law and reality is another thing. There is not a single developer that do not collect any fee before signing of S&P (be it the top 10 developers such as SPSetia, MahSing, Sunway, EcoWorld and etc.). Unless the buyer himself is all ready with bank offer letter and the signing can be done is 1 days or two so no booking is necessary