Application for Maintenance just went missing

I'd made an appointment for an application for maintenance. I went back to court to do a follow up on my Application as I have already appeared but received no feedback and no payment. Spoke to the clerk and she advised me that there is no proof of me ever being there on the system or might be that my application was misplaced [keep in mind that all my personal information is inclusive]. I tried calling them for a week now but they haven't answered any of my calls. What measures do I have to take before they respond to my query???