[mothered]

Then I am left with 81 possible numbers. So, I thought I should message all numbers on whatsapp, and so I did but after messaging 70 something numbers, WhatsApp banned me. 

So essentially, you only have 11 numbers remaining, yes?

I'm sorry, what I was trying to say was that I sent messages to 70 something people but only 2 replied, remaining others, I will never know about all those other people I messaged if they replied or not.

Maybe, I need to start searching with numbers I have.

Realistically, there are not too many numbers to eliminate.

If you physically call each one, It won't take long to complete. It's certainly a lot quicker than searching for alternatives.