Elica — Poor Service Quality

I got my 1 year old Elica Hob serviced yesterday and was charged 8K for repairs and replacements. A Hob that was purchased at under 30k needed parts to be replaced within 1 year speaks volumes of the product quality. Secondly the technician was not transparent with the pricing. There was no official product pricing catalogue. After a bill of 8k I was told there was a gas leak and the valve costing 4K needs to be replaced. And since I refused a safety valve was changed for 500. I’m still wondering if all the replacements / repair were legit or I was cheated. Payment was requested for without a bill and later provided only after I insisted. The technician wanted to take back all the damaged parts with him, which was also weird. Overall I’m very displeased with the job quality and mainly the service quality. Never will I buy an Elica product again.