i'm afraid...we're not...responsible for...
i'm terribly sorry... for the...
we apologize... we reserve the right to...
phrases showing enthusiasm or surprise
- phrases when you heard some complain and problem...
would you like a replacement
would you like a refund
would you like us to repair it?
promising action
- i'll find out what happened and let you know
- i'll look into it and let you know
- i'll change it as soon as possible