Adaptive Cruise Control problems of the 2021 Jeep Renegade

When traveling with the cruise control on, on the expressway, the speeddometer started to flicker on and off then totally went off. It lasted a couple of seconds and when it came back on my speed was at 55 mph. I was traveling at 75 when it started. This happens alot. Also the radio will sometimes blast its volume, change stations on its own or won't shut off. Last week my rear window went down and wouldn't go back up. These things happen occasionally but after shutting off the car and waiting it seems to clear for awhile. I took it into the dealer and was told there was nothing they could do, they had to wait for a fix for the software from Chrysler. I spoke with people from Chrysler and they told me the same thing. I leased this car in March and it is now August. How long do I have to wait for a fix? I am getting scared driving this car.