turbotax suddenly shows the deluxe version when i clearly chose the regular version. how to downgrade it back to the $39 version i used for many years - i dont need delux

The only version below Deluxe is the Free Edition.  Deluxe is currently $39 now.  

How to review your fees

https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/00/26353

Hmmmm. Why did Turbo renew Deluxe at $70 if it's only $39??

Oh  are you asking about the Desktop installed program?  Yes Deluxe is currently $70.  Did you buy the Basic program before that doesn’t come with state?   The Online version is currently $39 for federal.  

If you automatically renewed last November that was the Desktop Advantage plan,   Do you need help downloading and installing  it?  

If you want to downgrade the Desktop version or need help with a billing question,  How to contact Turbo Tax
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-contact-turbotax/00/26991

What is the Turbo Tax phone number
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632

I renewed Advantage Deluxe, which includes returns for one state and perhaps some other features. I'm good, thanks for your clarification.