Is This the Best the US Post Office Can Do?

You have got to be kidding me.

I sold a card on eBay, received payment and used the USPS machine to weigh and pay postage for the bubble mailer with the top-loader inside. I paid the amount through the machine and dropped in the mail box. I thought I was done - not so fast!

Three days later I receive the picture you see here. Yes, that's a post-it note on my bubble mailer saying I need to pay $.17.

It took them 3 days to determine their machine caused a 17 cent error and their way to correct the error is add more of a delay by putting the bubble mailer on their truck and returning it to me with a post-it note saying I owe them. Are you kidding me?

Why not correct the machine and move on instead of wasting time over 17 cents?