You're telling mysql you want to insert into one column and then you're providing it with two values. You either need to:
Add the second column your are inserting into to your query
Remove one of the values
Alter the query so it is doing two inserts of one value
Number 3 looks like what you want:
INSERT IGNORE INTO 2_1_accountsforpaidused (DebtorDebtAndPayment) VALUES (?),(?);