So are you saying that the number was correct or not? It sounds like what you have said is the number that you entered is what you thought was the right one, but if the hint numbers didn't match, then the number isn't the correct number. If the number isn't correct, then you are going to have to get in touch with Apple Support and see if there is something they can do for you. We are not affiliated with Apple in any way, we are just users like yourself here to assist where we can. This is not something that we can fix for you or even lookup for you. If the number that you have entered isn't working, then the trusted phone number is probably not the number that you think it is. Get in touch with Apple Support and see if there is something they can help you with.