By using my Apple credit card I thought it was interest free as long as I make monthly payments.
I bought an Apple iPad and used my Apple credit card.
I thought it was interest free as long as I pay monthly.
This is what I see when shopping for an iPad. I am in the U.S. and happen to have an Apple Card.
Assuming you are also in the U.S. and have an Apple Card, did you make the purchase as directed here, carefully selecting the right option at checkout?