Pratt and Whittney did not honor the warranty of their engines on Go Air Airlines and though they were covered under warranty they denied service or maintenance and Go Air had to pay hefty bill and had a bad hit on their Business
Such big firm with documented evidences and all access to law in Indian court of justice couldnโt fight even bigger company and I think this is still before court of law
This will likely be your case as well unless you want to sue them in international court of justice for false promise and shitty devices for high prices