No response to application 5 months later

I app**** for an increase in my Home Loan in November/December last year and kept receiving texts saying documents outstanding, even though I sent them over and over again and had to follow up with the call centre numerous times who either said the documents weren't there and i had to resend, or the documents were referenced incorrectly on their system and it would be resubmitted. I'm still waiting for a response to my application. At this point it would be better just moving my bind to an institution that wants my business.