Unprofessional Conduct - Debit Order

African Bank is now testing one's patience to the limit with regards to debit order payments during December months. It has no happened twice that they randomly decides that coming the end of the year around middle December they will randomly deduct their payments via Debit Order at any time of the month. And to top it all, they've now decided in December 2018 to deduct a payment twice during the month, on the 14th and 24th, unbelievable. The first time about 2-3yrs ago the matter was reported to the Onbudsman and resolved via an apology and now it occurred again. As far as it's know it's ******* for a financial institution to deduct Debit Orders on any other day, other than the one agreed and stipulated in the contract, so this is not acceptable.