Would like to return C 3 after purchase now !

Hello, after my C3 1.6 Sensodrive Exclusive causes permanent errors when switching, the car sometimes no longer drives forward, but only backwards and such things, I would like to return the car now to the Citroen dealer. 2x was tried to fix the error. Also the control unit was changed. But it gets worse and worse. The situations in which the car suddenly stops driving are not safe either. So yesterday he stayed in the middle of driving into a I had to drive a bit backwards and then tap the first gear again…..then we went again……until the next error 5 minutes later ! The dealer is really very kulant, friendly, trying hard…there you can say nothing. Our family bought many cars (also new cars C5/C2) there. I just called there and asked to take the C3 back and to get my other car back. I bought the C3 only 4 weeks ago. 3x it was already in the workshop! I will keep you informed if the dealer takes the car back!!