ABSA HOW CAN YOU TREAT ME LIKE A PIECE OF *****

I was in ABSA employment for the period May 2015 till end of October 2015 and that meant I was not paying for my bank charges on my current account .On resignation ABSA took the decision to migrate my account to a pay as you transact account resulting in me paying R800 for the month of November in bank charges , to say am angry about this decision would be an understatement of my feelings.I believe as a customer I should have been given the option to choose the most suitable option and was never given this chance . I am going to give ABSA a chance to give me my money back and allow me to choose what option I want or alternatively I will contact the relevant regulatory bodies to have this matter resolved . I don't have the time or energy to be dealing such issues so can I get someone from ABSA calling to give me a detailed explanation on who decided to take a decision on my behalf the last time I checked I had not given anyone such powers , Can you urgently provide me with an explanation as I don't think what has happened here is even right in terms of my rights as a customer