Incorrect Claims processed

Recently been retrenched I had opted to keep my provident fund in the scheme for investments, but opted for a portion to be withdrawn. Two months down the line I am still waiting for the funds to be paid out. After a follow up I was told to resubmit my claim form as the form that they received was to invest the full amount, what I cannot understand is how they read and captured the claim form without noticing that I had opted for a portion to be paid out. After submitting the forms I was told that I would have to wait another 6 to 8 weeks as per their claims process, Please advise how this is now fair that I have to wait another 6 to 8 weeks for your misunderstanding and inconvenience?