Before starting reading this article keep this thing in mind " It was my mistake "

I remember, it was my first web development project that failed (only failed as per client thinking. I delivered a full web solution. But, client not satisfied. Yes, It was my great mistake.)

So, what happened is, my friend was working in travel company as a digital marketing head. ( he left now and started his own digital marketing business) and contacted me for web development project for the company he working for. So, finally we ( company's CEO, my friend and me) met and discussed about requirements of the project and CEO asked me to send the proposal for the project. So, I my self created a proposal and suddenly I got a mail. It was my friend's mail with other 3 proposal's of other developers attached who also in the race😎. So, I looked into those proposals and changed my entire proposal to win this battle 😁.
(Yes, this is completely fine for me. It's a battle of business. And this is how the big corporates works when it comes to filling a tender of government projects.)
So, finally I created my proposal very lucrative with low margin and high quality.

Finally, My proposal got selected and I got an advance 40% payment. after that I started working on the project as per our discussion.

After a week I delivered a final project and I asked for a remaining 60% of my payment. Now, real game began. CEO asked me to add blogging system with social media sharing facilities for their website. I agreed and created that. After that he asked me to do the same as their competitors website.(Look like their website which means completely re-design the website. Which is not possible. "Within the budget we agreed with.") So, I said no with humble. Then he told me that ok, I don't pay you remaining amount until you don't do that. I said its completely wrong. Then he said that you didn't mentioned about it in proposal we signed and agreed. Now I'm little bit scared 😬. At that time I've all the control over his company's online presence. ( Domain , Hosting, their social media accounts all of that with passwords.) I can do a huge amount of damage of their online presence with those control. But, I'm not evil. Somehow, we settle down this situation and the great lesson I learnt is that
" look and think twice before sending and signing an agreement or proposal "