Overcharged for filing fees. I linked through Fidelity using $15 off $70 for Premier, so my total should have been $55! Instead, I was charged $75? Pleas eassist

How to get the partner discount
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-get-my-turbotax-affiliate-partner-discount/00/26509

Hello, Thank you for the reply. I did all the things mentioned, I even saved a screenshot of the price. I signed up for $15 off $70 = an actual total of $55, instead I was charged $15 of $90 = $75. Maybe I should just try their customer service again. Last night they told me they didn't have authority to do a refund?!?!

Well there was a price increase on March 1.   The early prices expired and Premier went up to $90.  So you probably had to pay  before then to get the $70-15 price.  Now it's 90-15.  Price is determined at the time you pay or file, whichever is first.  You can pay early to lock in the lower price.