If you had a current balance of $7,000 and carried a balance of $5,763.68 from the prior month, I believe you have to pay interest during that month even if you pay off that amount by the due date as there is no grace period.
If I pay off this balance, my next months balance is $1,300
Im not sure I follow your exact scenario…but if you are saying that you failed to pay off the balance the prior month, but you pay off the whole thing the next month…then you still pay interest on prior month balance…then I believe that it true.