GWM P series Faulty Issues

I bought brand new Pseries 4X2 DLX double cab 2022, it was fine for few months, the last last 5 months the car has been doing auto exhaust self cleaning, when this happens the car speed is 60km/h, the completely cant accelerate beyond that, I am therefore forced to take the can in for manually cleaning , this issue has been happening every month for the past 4 months, I reported this issue with GWM Durban central and Pinetown dealership but they do the same thing all the time which does not fix the core problem. This car is not reliable, as this auto cleaning happens randomly as results am inconvenienced by this issue. This car is faulty and seems that the team maintaining these cars don't know what they are doing either. I am so frustrated by this and I will not recommend people to buy this car