Delay with Withdrawal Claim

I have been dealing with Old Mutual ever since my previous employer (Diamond Shipping Services) submitted my Provident Fund withdrawal claim forms on the 01.04.2016. Since then I have been given the run around by Old Mutual, claiming that they have not received my payroll exit file even though my last working day was the 28.02.2016. I was then asked to contact Evolution Corporate Benefits by my previous employer to expedite my payroll exit file. According to Evolution (Grant Kingwill), the payroll exit had been submitted with the February month end and I should no longer be an active member. Old Mutual then advised him that they will need to wait until the March month end to be submitted in order to finalise. I waited patiently and he submitted the information last Friday. I called Old Mutual again (for about the 30th time this month) and they STILL HAVE NOT RECEIVED MY EXIT FILE!!! This is pathetic and disgusting service!! Evolution has clearly submitted everything but Old Mutual have been having issues updating their system! It has been two months of running up and down and I really need Old Mutual to help me out here! Please contact me urgently,I refuse to wait another 6 weeks!