I have a very interesting and promising business for Saudi Arabia. Investors listen and understand, in a few days they are put off. What is the problem?

Revise your presentation and see if you are giving them too much or too little information, even look into the possibility that you are selling yourself more than your services. Obviously they like you but they are not buying from you.

Make sure that you are not over selling them, and do not be afraid to get them to sign on the day. If you have built a good rapport with some of them, ask them what was it that you did not do right!!! If they answer nothing then ask them to come back and to buy your product or service.

Also you should revise your customer profile, probably you are addressing the wrong target group.

A successful method in a country is not necessary successful in another. 

Consider the special circumstances now in Saudi and GCC.

It might not be your problem but something else that you can't even imagine right now.

Furthermore if this promising business required funding... this could be a huge issue right now.