They still send the invoice. I accidentally left a couple of small files in an S3 bucket for years. Eventually my card expired on that account and they continue

They still send the invoice. I accidentally left a couple of small files in an S3 bucket for years. Eventually my card expired on that account and they continued bothering me until I contacted support and we agreed to waive the bill. I imagine they would have been more forceful if it was a larger bill.