Adaptive Cruise Control problems of the 2019 GMC Acadia

On 9/24/23, I was driving both locally & the highway in s. I. , NY. Suddenly the adaptive cruise control feature shut off & on repeatedly & kept flashing (adaptive cruise control unavailable) almost causing an accident, then I pulled over and shut off the system. The next day on (9/25/23) I brought the car to GMC & Buick dealership at 1855 hylan blvd, s. I. N. Y. 10306. After a couple of hours, the manager carlos mercado tells me they need to do further testing tells me to come back on 10/04/23. I arrive at 9:00am for my appt. After three hours, I asked him what’s going on? he tells me that there are two modular’s in the vehicle & needs to be reprogramed & updated. He says the mechanic that was working on it can’t do it & to come back. I knew at that point I was being scammed. On 10/11/23 at 10:15am he comes & tells me the vehicle is ready. I go to the register tells me at first was $671. 00. I said for what? it’s outrageous! he says OH it’s electrical. I asked him did you replace any parts? he says no. Replace any wires? he says no. I said if this was a recall I wouldn’t pay for it because its a safety issue. So he must have felt guilty and says I give you a discount & the price now is $555. 56. So I says to him this is a lot of money for this. He tells me it was labor. I said to him I have been watching the whole time that the vehicle would sometimes be in the service area & the parking lot with the mechanic hardly working on it. I said to him do you think I’m a fool because I’m a woman unaccompanied by a man you take advantage of me. So they would not release the car unless I pay for it which I did with a credit card. On 10/12/23, I filed a complained with gm for a full refund, and explained that the program was faulty & only need an update and I was contacted by charlie from the executive team on 10/17/23. Tells me he will reach out to the dealer. On 10/23/23 he tells me they can only offer $250 in reward points which I declined, because they know I wont use it.