Spice Jet Airlines — Flight Cancellation

I had flight from Mumbai to Varanasi on 27th April. The booking of my family was done 2 months before.
I planned my journey hotel booking, return flight everything and then they cancelled my flight. They just notified this with with one single SMS that I missed to read. There was no call. Even the day before my flight I was doing web check-in no where they mentioned that the flight is cancelled. Instead the web page is asking to book desired seat, food and in the end it shows web check-in not possible, proceed to airport's check-in counter to get the boarding. How can somebody will think that the flight is cancelled. Atleast it should be highlighted during web check-in page.
Simultaneously I am getting SMS from Spicejet informing me to get to airport 2hr before your flight, book taxi from mumbai...blah blah..
In such scenario how it is possible to know that your flight is cancelled? Even reaching airport I even tried to call spicejet helpline number that can up to switched off.
What kind of service is this?
It was a huge mental torture for my family. There was no other flight.. not even connecting flight. The staff didn't want to help us as they were saying SMS was send.
Do you really think, just 1 SMS is enough to reach out to your customers.