Consumers have the right to object. That's how companies get feedback and realize when they are losing customers. This whole take it or move on mindset is precisely the reason we have a monopoly of Indus Toyota and atlas Honda with their overpriced and substandard cars.
BS. I don't know why certain members are saying a contract is legally binding. This is false, Legal Law trumps any contract that you sign. E.g. if I were to sign a contract with you requiring you to do something illegal under Pakistani law than it will be a non-binding contract and courts will rule in your favor. Doesn't matter how many times you sign it. That's how law works.
I live in US and each state has their own Consumer Protection Laws. California especially is very consumer friendly and even if you were to order a 100K plus special order BMW, on the day of the delivery you can just say that I don't want it and walk away. I don't know about consumer protection laws in Pakistan but what Honda Atlas has done is very unethical by any standard and I'm pretty sure they can be roasted in courts. However, that will require a concentrated effort by buyers i.e. get a shared lawyer etc. Just complaining online isn't going to bring any change in Honda's attitude.