Sai Service Station — anti rust coating services

Given Maruti Wagon R to Sai Service Andheri East service station for Anti Rust Coating, AC servicing and Glass Polishing on 11 June, 2019. The vehicle was returned back on 12 June, 2019 . However, upon using the vehicle, with the AC on, there was terrible chemical smell in the car Cabin. Later, the car was driven by my driver with me sitting inside and with the windows open and AC off. The smell went off by a large extent. Again closed the windows, and put the AC on and to our surprise, again there was a strong chemical smell. Took the car to the same service station back in the evening and Mr. Chetan said that it is the smell of anti rust. He opened the car bonnet and showed us that Anti Rust coating was applied to some parts inside the bonnet and also to the under-body of the car. How can underbody rust coating /paint be applied to the various other parts inside the bonnet in the very first place as it is obvious that AC would suck those toxic paint and make the air inside the car very harmful and dangerous, toxic and possibly carciogenic. They now sprayed little water on it but the smell is still very strong. This is a clear cut case of faulty application and lack of expertise in knowing as to what should be applied where and how and where it should not be applied. I am unable to use my car because of this flaw. The cabin air feels very horrible and causes vomiting and dizziness. This becomes a good case to file in consumer forum and the service station should be charged with negligence.