Illegal termination from IT company

Hi Respected Members, I have been employed by one IT company based out of Mumbai as a Technical Recruiter (Permanent Employee - 1.7 yrs tenure) . 3 days ago while I was working (WFH), they blocked my account and HR called me and told that "You have been terminated due to a Business call". Today I received termination mail, an excerpt of that is below: "As per clauses 5 and 6 of your appointment letter, we regret to inform you that your services from Company have been terminated. Extract of which has been mentioned below. Clause 5 (extract): The term of this Agreement is “at-will”. Either party may terminate for any reason or no reason, with or without cause. Clause 6 (extract): “The company may at its discretion, terminate your services immediately, by paying one month’s salary in lieu of the notice period”. In my opinion this termination is illegal for following reasons: 1. They have violated the principles of Natural Justice 2. I am a workman under sec 2(s) of Industrial dispute act 1947 3. ID Act 1947 will apply to company since it is well settled that IT company is Industry 4. The clause 5 of appointment letter they are referring to "agreement 'at will' and termination for any reason or no reason, with or without cause." is not rational and doesn't seem to legal contract. Kindly enlighten me with your wisdom what is my legal position and what legal remedies are at my disposal Thanks, Rahul