Cannot upgrade on day of debit order!!!

For the past weeks we have been called by Cell C and asked to upgrade our contracts. So today we head out to the nearest branch, which is in another city, and they decline us due to outstanding payment! We have been on debit order the past 24 months and never missed a payment. Our regular debit went off at 6am this morning with no problems.<br> <br> Cell C says to come back Monday when the latest payment clears on Cell C's side. What??? I drive 50km for this? I am leaving for Cape Town and will not be back in the coming weeks. My wife has no way of getting to Nelspruit, and she urgently needs a phone, as her old one is broken. What now? How long does it take for normal payments to reflect on your side? Why didn't you tell us not to upgrade on \debit order day"? Why this stupid policy? You have inconvenienced us in a massive way. <br> <br> Is this your way of saying: \"" Thank you for being a loyal paying customer"