Telkom no customer service support

So we have had a Telkom account for our mobile phones for over a year and my wife and I have been very happy with our service from them last month on the 24th of August 2018 they have decided to debit our account a day earlier as we may all our payments between the the 25 and 1st of every month so today we get a statement and saying we owe them R202 for a debit order reversal not only did they receive their money on the day they where supposed now they feel fit to charge us any amount they see fit as per the manager Andy firstly this person has no customer service s****s not also being able to provide a solution as it was not our fault that they had debited the account early and as per our paper work the agreed day was on the 25th or the day after this is ridiculous and we will take this forward with the obudsman as they are getting away with over charging customers and as it seems they don't have a set fee for the late fee charge this is ********* business