Documents submitted into a black hole and consultant cannon understand a simple request

Last year sometime I attempted to apply for a limit increase via the call center and was advise to send payslips through. Months past and I still haven received any response. Most recently I attempted again to apply for a limit increase and was requested to yet again provide documents (payslips) to ********** this was sent through on Monday 18 and on the auto response was advised that contact will made within 48 hours. This morning I called through to the contact centre and the agent who assist clearly uninterested was telling me that the system is not offering a limit, exactly the same information I heard on Monday. I enquired why contact has not been made and is there perhaps an update and the consultant, clearly *********** to comprehend my request advised that the system does offer a limit. What is the point of sending documents through? She was fixated on the system offering a limit and the fact that they are controlled by the system? Beats me that there is no manual credit process or no contact has been made. I'm really concerned at the poor level of service I received. My accounts are always up to date with additional payments. Can someone from Edgars please give me a call to explain their process.