[SamAdams76]

The young clerk was amazed I had reported it and insisted on returning the $310 too much it had given me (yes, I confirmed the withdrawal figure was counting $20s and shoving out $50s)

The math doesn't work. How could you get $310 too much by getting $50s instead of $20s?

If you took out $200 expecting 10 $20s and got $50s instead, it would have been $500 - or a $300 difference.

If you took out $220 expecting 11 $20s, and got $50s instead, it would have been $550 - or a $330 difference.

[caseinpoint]

You’re right. My weekend brain is kicking in. It was $210 too much. I requested $140 and it gave me $350. Mea culpa.