Key legal question
Whether the set-off of overpaid supplementary benefits against current benefits was lawful while an appeal against the repayment order was pending.
Extracted holding
The set-off was lawful; a pending appeal against the repayment order did not prevent set-off against due supplementary benefits.
Extracted reasoning
Set-off requires mutual, similar, and due claims; it is allowed even if the counterclaim is disputed and even without a final judgment. The suspensive effect recognized for appeals against repayment orders does not apply in the same way to set-off against ongoing benefits, because the issue is whether full current benefits must still be paid.