Umpteenth and pertain

"For the 1,000,000th time, this is how to find my house"
but instead of saying "one millionth", you replace it with umpteenth. Umpteenth is like a "fake number". It is a slang expression.

If your little sister is bugging you to take her to the movies, you might say "For the umpteenth time, I don't want to go the the movies!"

Sometimes people say it when they are frustrated with answering someone.

Pertain to sth phrasal verb FORMAL
to be connected with a particular subject, event or situation:
We are only interested in the parts of the proposals that pertain to local issues.

Idioms

(above and) beyond the call of duty
much more than should be expected.
If your waiter goes beyond the call of duty, leave a bigger tip.

Etymology: first used about police officers, fire fighters, or soldiers who were injured or killed while doing their jobs.