FNB Debit order fiasco

Before Lockdown in March, I agreed to a Telesale product which will only start deducting in July. Then lockdown happened and I could not afford this new debit order. FNB in the mean while has disabled the function to stop or reverse debit orders (due to Covid, I will never understand this reason). I went to the branch and they told me debit orders cannot be reversed or stopped by them as well. So I started writing emails to every FNB email addr I could find. I have not been contacted once, although I sent at least two emails everyday for the last month. I am really dissapointed with my Favourite Bank. Seems like I will have to close my account all together just to get rid of the debit order