Imcompatent, pathetic staff answering 084135 number each time I called

I've been struggling almost a month to get a paid up letter, I've wasted so much airtime on calls already, purely imcompatent people answering phones up to the supervisors really pathetic. This morning I was told that my query takes 72 hours to resolve but people went on leave so they Short staff, my Lord have I heard such unprofessional people really. And she put phone down in my ear when I told her it's been almost a month.