Not listening to the clients request

On the 27/08/2018 I did an application of insurance as I am going to be a regular driver and everything went well as my application was approved however when I spoke to a consultant which I can't remember his name but it was a male person,And on that same date the guy asked me when do I want the first debit order date?I said to him I chose the 20/8/18 as I am getting paid on the 20th, however he said to me while I am talking to you on the phone I will change the date to August as the system take it automatically on the last day of the month,Boom!! the goes a debit order from Miway on the 31/7/18 which was not my agreement with Miway and on the 1/8/18 I get unpaid returned from the bank that the debit order was unpaid which the bank is penalising you for unpaids & it costs R110.00. So now my question is how do I do a business with a company where they don't listen to the clients requests?Already I am not certain about them my account is alredy bad