No response on GEPF pension claim.

I have been applying for my late father's pension fund since 2012 and everytime there is always a a document missing but no-one ever gets back to me and gives feedback as to what exactly is missing. I have submitted now more than 5 times and still no feedback as to how far the claim is, when you call the call centre they have absolutely no idea what they are saying and are very vague with their answers. I have been in-contact with multiple employees at the department and none has helped in any way, I cannot keep taking days off work to go resubmit the same thing over and over without a way forward. This kind of service is unacceptable as my father served the government flawlessly for years on end working for his children only for us to get this kind of service when it is time for us to reap the benefits of his hard work. I am now even considering getting my lawyers involved to resolve this matter as I cannot be shunned around like this any longer. Absolutely terrible service from both the employer and the GEPF.