Elica — Elica Top end gas hob

I have purchased top end Elica gas hob 2 years back which is costly in comparison to rest all the brand having similar models. Two of the burners are not working at all and other 2 have very minimal flame. I am unable to even get the price of burners. To replace those burners I have been trying to reach elica customer care and all available contacts since a month but no luck. Either calls go unattended else no proper information. Moreover customer care agents are rude and not providing proper information. No escalation email are available to complaint such behaviors. Its a big time trouble which has now led to frustration. I am wondering how this Italian brand can be so poor in services.
I am wondering now to reach FABRIANO (AN) ITALY HEADQUARTERS as an final call. I will never purchase any Elica products ever.