I am guessing that you mean to make a booking, not when you are waiting outside for them to answer the phone.
If a lady wants to phone me back then I will answer the phone but would probably not want her to phone back after a hour
Because I would be trying to arrange something else or just given up
I usually do not phone of the cuff but if I do I try to give them at least half an hour before I might try again, I will only try someone two or three times max as I know if they do not answer in a hour and a half that they are probably working or not interested
If someones phone is switched off I would only try after another half an hour has elapsed if they do not answer then I do not try again.
I leave a voicemail if the phone accepts incoming voicemails
But most of the time I arrange things by E mail
If a lady wants to phone me back then I will answer the phone but would probably not want her to phone back after a hour
Because I would be trying to arrange something else or just given up
I usually do not phone of the cuff but if I do I try to give them at least half an hour before I might try again, I will only try someone two or three times max as I know if they do not answer in a hour and a half that they are probably working or not interested
If someones phone is switched off I would only try after another half an hour has elapsed if they do not answer then I do not try again.
I leave a voicemail if the phone accepts incoming voicemails
But most of the time I arrange things by E mail