申もうし訳わけございません

expression

I'm very sorry; it's inexcusable

Very formal apology, stronger than すみません. Used in business or serious situations to express deep regret.

• ご迷めい惑わくをおかけして、申もうし訳わけございません。

  I am very sorry for causing you trouble.

expression

thank you very much (for help, etc.)

Used to express deep gratitude when someone has gone out of their way to help, often implying that the speaker feels unworthy of the kindness.

• わざわざお越こしいただき、申もうし訳わけございません。

  Thank you very much for coming all this way (I'm sorry to have troubled you).