How do you say 'sorry you have the wrong number' in Spanish?

'Your phone number is....' = 'Tu/su numero de telefono es....' (Informal/formal)

'Phone your number' = 'Telefoneame tu/su numero (de telefono)'

(If the number in question is not a phone- but, say, welfare-number, number of guests/clients, etc., omit 'de telefono' in both cases)