Errors in the hybrid system

Hello guys! I’ve had an MG EHS for 2 years. In itself very comfortable and nice to drive, except for the automatic driving light! That drives me almost crazy. But my real problem is this: I had already 2x, at the distance of several weeks this problem. I start the car, ignition goes on, on the dashboard all lights shine, almost looks like a Christmas tree on holy evening, and nothing works. Can not switch into the Gahr mode and, which is much worse , the ignition can no longer turn off. Vehicle writes to me: Mistakes in the hybrid system and everything else is not possible. The first time I was able to trick the system by getting out with the key and walking away a bit. I could do it because I was standing in the Hif at our company. The second time this didn’t work. I put my service appointment forward to fix it, but it’s hard to believe that the error memory was read out and that the Service made, scarce 800€! ?? but the error has not been fixed. This has to be submitted to MG only, whether this is a guarantee matter…. Does anyone know the problem or did they already have it? Does anyone know if this can happen during the trip? Did the car only take over under protest after the so-called service, because I find this very worrying if you can’t turn off a car. I’m in close contact with the workshop and put the car back this week. Therefore h I would like to have feedback, if this has happened more often. Because I only got very evasive answers to my question.