衷心からお悔やみ申し上げます.
I apologize from the bottom of my heart.
I extend my sincere condolences to you.
the act of humbly expressing gratitude
I am grateful to you for your sympathy.
I beg many pardons―a thousand pardons.
I am grateful for your sympathy―thankful for your sympathy.
I beg many pardons―a thousand pardons.
Please excuse me for my rudeness.
I condole with you on your affliction.
I really don't know how to apologize to you.
I am grateful for your sympathy―thankful for your sympathy.