Mis-selling of the insurance was so widespread that the worst firms added it without borrowers knowing. PPI on a credit card should be simple to spot-a payment to cover the premium will show up on monthly statements.It can be harder to identify on loans and other credit agreements. The cost of it may even have been rolled into the loan amount, meaning there is no separate payment to cover the PPI. If it wasn't explained, you can claim. 2  If you were sold a 'single premium' policy-where the whole cost of the loan is paid for up front with money that is also borrowed at the same interest rate as the loan-you should at least be able to get a refund by cancelling the PPI.