When giving the phone number to call back say each number clearly and enunciate it correct, say one as one and not something like hun and try not to bunch all the numbers as fast as you can, we do not know your number at all, if you want a call back make sure we can understand what you said in the first place, it is very simple:
After the machine answers and you hear the beep say slow and clear
My name is Xxx I'm calling for (reservation, product or what ever it may be that the caller needs) my phone number is area code X....X....X phone number is X...X...X---X...X...X...X
That way we have the basic message and a phone number that can be understood and will be called back, the delete button is very useful so as not to waste time trying to understand garbled pone numbers that turn out to be all wrong.
navegator