Which of the following is the BEST format to use when responding to an angry customer?
a. e-mail
b. phone call
c. text message
d. instant message

Respuesta :

PHONE CALL: BEST ATTITUDE FOR APOLOGY 
I am going with B because using a phone call, the customer can notice emotion, if you send a text or something, the person won't know if you actually mean the apologies. Hope i helped. Have a nice day.