Glendale Dodge Chrysler Jeep Ram

I made an extensive research about their service department and learned that they're defrauding customers left and right, and some of them don't even know they were ripped off.
I brought my 2015 Ram Promaster City to perform software updates on TCM and PCM because software had bugs causing transmission to give error code when on freeway. We agreed to get it done for $440 (because the dealer I purchased my car from, russell westbrook dodge jeep ram, wanted to charge me $625 for same updates to fix transmission software bugs).

I was advised by Valvoline, oil change place, to change transmission fluid every 90,000 miles but only at the dealership, because it needs special tools. So I said at the Glendale dealer if they can do transmission service (fluid change) the same day then let's do it since it's due (101,000mileage).
I didn't realize that my vehicle does not need a transmission service at all. The lubrication lasts for the lifetime of the vehicle. And does not need to be serviced like other cars.
My service advisor, Javier didn't say anything about that this specific vehicle doesn't need a service.

He just went ahead and took advantage of my ignorance and added the service. They've been claiming till the end that the car DID need a transmission service, every 105,000miles to be exact, said the guy who was discharging the vehicle. The entire conversation was recorded, I'll be posting updates about this case.
After transmission fluid was changed, I told to Javier over the phone that this vehicle didn't even need a service according to owner's manual. He said yes I know, but it's serviceable.

and we did change the fluid. He also said that the old fluid was actually good for another 100,000 miles, which itself contradicts the purpose of changing it.
I researched that in these kinds of frauds they don't even change the fluid, claiming that they did. And I believe that not only the advisor was either negligent or deceptive, either way they should have advised me that my vehicle doesn't need a transmission service from the beginning. They performed a service my car didn't need and that's just wrong.
This specific vehicle requires more labor fees in order to check whether transmission fluid was indeed changed, and weeks of wait for the appointment at other dealerships.

which by then it'll be harder to tell whether the fluid is new. I'm not going to proceed with this check, unfortunately.
I'll fight this until it's justified, and refunded everything except $440 to which my car needed software updates and I agreed to pay for it (even though it's fishy to pay fees to update factory software defects, which is not my fault), however for transmission fluid change scam that they charged me additional $514.69 should be refunded.

Even if they changed the fluid, it didn't need to be at all and I was mislead that I had to. The total cost was $954.69
I have recorded all of our conversations, however not going to risk uploading them here.