Perhas ive just forgotten how it works, but im sure td this month had a payment date of the 19th. On the 19th i noticed my balance drop, and a payment was created in the payments report. However, it then disappeared, and my balance now shows as the original amount. When i check the next payment date it's for Januarys payment.
Im angry with myself now. I thought id check my details, i changed banks couple of months ago, and i typed in 9 digits for the account number. Gutted, wrong month for that to happen.