Kept in the dark.....

I've been struggling to get any respond even after multiple mails and phone calls just to get an outcome for my application. I receive messages that I have to phone them to complete my application and once I phone, they just tell me that they will phone me which never happens. It's been almost a week now. Why is it so difficult to just say yes or no? Should I move on or what? I read good reviews about this company, thus why I am disappointed with the service so far.