I would just call them and be like
"oh sorry something came up so I couldn't call back.
but anyways I was just wondering about my vacation pay"
- that should get the msg across, since they probz have to ask headoffice etc etc.
and just call back in a day or two. and follow up. and you should have your check within 2 weeks.
because this happened to my boyfriend. but with him he had to call headoffice HIMSELF...
hope that helps =)