I think you were charged right. Did you also do a state return? State is a separate 39.99 charge. Or if you wanted the fees deducted from your refund there is an EXTRA 39.99 Refund Processing Service charge.
Deluxe is 39.99 but you already paid 19.99 for Plus so you are only paying the difference of $20.
So it is 19.99 for Plus
Then +20 and + 39.99 for state (or the Refund Processing) = 59.99
So you are paying a total of 79.98 which is the total of Deluxe + state or the Refund Processing. You can pay with a credit card to avoid the extra 39.99 Refund Processing Service charge
How to see your fees
https://ttlc.intuit.com/questions/2565973-how-do-i-review-my-fees-in-turbotax-online For help with fees
https://ttlc.intuit.com/questions/1901213-what-can-i-do-to-reduce-my-fees What is Refund Processing?
https://ttlc.intuit.com/questions/1900596-what-is-the-refund-processing-serviceHow to remove the Pay from your Refund fee
https://ttlc.intuit.com/questions/1900517-how-do-i-remove-refund-processing-fees-in-turbotax-online-...
