Overcharged filing fee I had a discount through my bank and it was not applied

[Leecf]

I had a $15 discount to use towards the price of filing my taxes with TurboTax that I received through my credit union. The discount was not applied. How do I go about getting this resolved because I’ve sent emails and have yet to hear anything from TurboTax.

[ee-ea]

https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/get-turbotax-affi...