Customer has to suffer consequences for OML Superfund mistake.

I used to work for Old mutual insure and left the company end of July. I have requested some of my pension fund to be paid cash and the rest to be sent to my current employer. However , on the 27th of October the amount was paid in full after 6 weeks which was suppose to be 4 weeks initially. I called to inform the superfund team that the claim has been paid in full. The lady I spoke to escalated the complaint to her manager/team leader who was suppose to give me a call within 3 days. Unfortunately 3 days passed and I never heard from him/her. I called yesterday evening and my line dropped off no one bothered to call me back although she had access to my records already . This morning I called again the lady I spoke told me that I will have to deposit the money back and send the proof of payment to her. However they don't know how long it will take for finance to resolve this issue. The manager explained the process is going to be three weeks . I have been patient with the superfund team this is not the first time I am having issues with this *********** team. I only have a week not three weeks. I can't bear the consequences for your incompetence's. I want old mutual superfund to tell me how can they expedite this process as I told you I don't have three weeks this whole thing is going to impact badly on my side.