Disability Benefits: Back Pay Owed for Social Service Benefits

I am awaiting a decision on my SSD case. I worked for a non profit (my last job) and they werent required to pay into unemployment. When I became disabled I wasnt able to get unemployment and had to apply for social service benefits while waiting for my disability case. My question is, do I have to repay the benefits I received while waiting for disability?:confused: I have heard that this only applies to people getting SSI, but not sure ??

Disability Benefits: Back Pay Owed for Social Service Benefits