Poor services

I registered with Rosebank College, they send proof of registration which does not have a college stamp, I wrote them emails since last week, they not responding nor answering their calls... I'm so stressed because i'm trying to apply for funding and my challenge is the college not responding to calls and email... I mean all campuses not answering the calls and the due date for funding is tomorrow. They cannot take any proof of registration without a college stamp #im so stressed and drained... I feel like deregistering with the college as its just a red-flack regarding the college