Handed over for PAID ACCOUNT!

I pay my WONGA account every month. On the 20th of April 2020 my debit order went through smoothly, no hassle, they didn't hesitate, next thing I get a message that my account is outstanding, I call Wonga on the 01st of April 2020 and speak to a lady called Unathi, I ask her what is going on and she also confirms that the payment went though. She assures me that there must be a mistake and that she can see that the debit order was successful and that I should ignore the email. 3rd of April 2020 I get an SMS that I have been handed over to some Alliance CCS Company. What nonsense is that? Who gets handed over for a paid account!? Guys you are barking on the wrong tree!