お世話になる: to be much obliged to someone, to be indebted, to be grateful, trouble someone

世話: care, looking after, help, favor

お世話になりました, 御世話になりました: thank you very much for everything, I'm very obliged to you (for what you've done)

take care of, attend upon

to be much obliged to someone, to be indebted, to be grateful, trouble someone

form past of お世話になる

Thank you very much for everything, I'm very obliged to you (for what you've done) (literally, “I have been taken care of.”)

care, looking after, help, favor

bother; meddlesome person

(idiomatic) to bother, to meddle, to poke one's nose into; to be too helpful