Backlog of payments

So for the second time in two years Nedbank does the same issue. We have a stokvel that we saved money with, the payouts were expected to be before the end of the week but now we being told to expect it next week because Nedbank has too many stockvels to pay out. Last year the same thing happened, so each year don't they expect more clients so they can prepare? Now everyone who has plans for the public holiday is stranded?