Bad service

I have been waiting for 6 months to get answers from NBC HOLDING regarding my Provident fund claim.<br> My phone bill is high as I have been phoning Wendy almost everyday as she always not available to answer my call and when she does then she will make promises that she will follow up and feedback but she will never call me back neither respond to my emails. I have tried to escalate this issue but I was told is only Wendy who can assist me, I am very frustrated with the bad service of NBC Holding.