お待たせしており恐縮ですがもう少々お待ち下さいの英語

We sincerely appreciate your patience and look forward to hearing from you.

Sorry to have to ask this, but could you please wait here for a little while.

Certainly. I will need to confirm it, however. Please wait just a moment.

We’re sorry for the inconvenience but kindly bear with us for a while longer.

I am sorry to cause you inconvenience, but I am looking forward to your reply.

I'm sorry to have kept you waiting so long.

The longer we waited, the more impatient we became.

Such being the case,

The longer I waited, the more impatient I became.

Such being the case, I must request you wait.

Better be waited for than wait for another.

I apologize for the trouble, but please do your best.

Wait in the waiting room.

Better be waited for than wait for another.

I am truly sorry for disturbing you during a busy time, but thank you for your cooperation.

The long-looked-for day―The long wished-for day―has come at last.

Sorry to ask this of you when you are busy but I appreciate your help.

I am sorry to trouble you despite being busy, but I highly appreciate your cooperation.

We regret the inconvenience and look forward to meeting with you.

Such being the case,

Maybe you should wait.

I have my hands full right now, so please wait a little.

We have a visitor right now. Would you mind waiting for a while?

to look forward to an event

We are terribly sorry to take up your time, but please us offer your understanding.

You'll have to wait.

I am terribly sorry to inconvenience you, but I appreciate your correspondence.

I apologize for the trouble this will cause you, but I appreciate your kind cooperation.

(I'm afraid) I'm in (rather) a hurry today. Can you come again tomorrow?

All of our phone lines are currently busy. We apologize for the inconvenience but kindly ask that you wait a little longer.