I'm sorry that I disappointed you.
I'm sorry I disappointed you.
あら、よく聞こえる。
It has been a long time since I wrote you last.
It has been a long time since I got in touch with you last time.
I extend my sincere condolences to you.
I'm sorry to hear that.
大変申し訳ありませんでした。
I am sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm very sorry to hear that.
申し訳ないこと
I'm afraid ~.
A thousand apologies.
うるさくてごめん
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I'm sorry to hear that.
I am sorry to hear that.
I'm very sorry to hear that.
I am sorry to say.
I am sorry for being late.
I am sorry for my impatience.
I am sorry for troubling you.
I am sorry to cause you trouble.
I am sorry for making you worried.