Jaguar — bathroom shower panel

Address:

Gurgaon, Haryana, 122017

I bought 3 shower panels for my house last year. I lodged a complaint with jaguar customer care on october 12, 2018 stating that in 2 of the panels the pressure of water has dropped from the cold water side.
The technician came on 14oct 2018 just to tell me after inspection that he is not the concerned expert and some one else will visit. Till oct 20, 2018 nobody came and when i relodged my complaint with the customer care some technician visited today and left the panel in a much worse shape telling me that he can’t reassemble it back. Now he has rendered my bathroom unusable.
Is this the kind of service we expect when we buy premium products like jaguar