My advice is, if you are invited for an interview, and you are seriously considering the school, then I would still go for the interview because it can only help you in getting accepted. If you are seriously considering the school and decide not to interview because the class may be full, then there is no chance of you being accepted. I know it's an obvious statement, but just keep that in mind with any school moving forward.
Also UNECOM's decisions are either acceptance or rejection. You are waitlisted if you are deemed accepted into the school, but they have already accepted the max amount allowed for the class. There is a lot of movement on the waitlist throughout the year and so don't lose hope if you are waitlisted and want to attend here. Hopefully there are some people either in the 1st year class or 2nd year class who were waitlisted and possibly chime in. I know they are busy with exams this week.