Best answer by Angelabikerbabe
You should always be in credit by approx 1 months' DD amount.
If you contact PP, via Wattbot, asking to review your DDs and issue a refund.
if you go to the app and click on the 3 lines at the top right, then click on help, then ask Wattbot,
Then you need to type in 'message the team' ,
then you can send them your message. Might take a couple of days to get back to you, but they will.