http://www.talktomeinkorean.com/lessons/l1l4/ I learnt the Korean 'excuse me' from this website. I also learnt that 'chogiyo' sort of equals to' hey you over there!' So you only use it for calling someone. It cannot be used when passing through crowds.

실례합니다(Shillyehamnida) 잠깐만요(jamkanmanyo)

Ithing ( shillyhamnda ) , some time they say shouqyoo