Claim withdrawal unsuccessful

I've resigned from my previous employer on 31 August 2018 and I've filled in a claim form to withdraw my provident fund. My previous employer only submitted my forms on 11/10/2018 (no fault of Old Mutual) Since then I've been going back and forth with Old Mutual and SARS as Old Mutual is saying to me that my details are not the same details that SARS has to I got in contact with SARS and all the details are the same. After being told 3 times my details aren't the same from a consult I've been dealing with, I decided to call Old Mutual RFA directly, the consultant on that side asked me to call SARS and get a Notice of Registration emailed to me and email it back to Old Mutual Superfund. After all this time, why wasn't I told in the first place to get a Notice of Registration. So SARS has declined my claim twice already. My ID number and Income Tax number are exactly the same at Old Mutual and at SARS. I am just not getting answers and it is really frustrating!