SIM blocked due to Public Holiday

My sim has been blocked now for 3 days because my debit order could not go off on the 1st due to Public Holiday and went of the 2nd. Now they blocked my sim until my debit order can be cleared and this can take up to 3 days to verify my payment. My online account says I am in arrears with an amount of R0.00!!!!! I have been with Vodacom +- 5years and I have never had an issue like this. Its absolute pathetic. I am being penalized because there system is so stupid. My phone are used for business and with me traveling I cannot even check my emails. I am definitely going to go to Cell C and ask them to buy over my contract. I just had it with them now.