Final answer:
When dealing with a phone customer, it is important to ask for permission before putting them on hold, but not for longer than a minute. If unable to assist, it is best to take their number and call them back as soon as possible.
Step-by-step explanation:
When dealing with a customer on the phone, it is important to provide good customer service by asking for permission if necessary to put the customer on hold. However, it should not be longer than one minute. If you are unable to assist the customer, it is best to take their number and call them back as soon as possible. This shows that you are committed to resolving their issue.