How would you even know if some competitor reported you (rightly or wrongly)?
I wouldn't waste my time worrying about what someone else is doing. I run 4 businesses and I get plenty of attacks on my main business line, but I've been there for 22 years. Competitors spring up, run black propaganda compaigns against me. But in a year or two they are bankrupt by their own hands.
At the office we laugh at them. We consider them jealous and weak people, which they are.
Don't get me wrong, these people can and will do damage. But that's part of living on Earth, apparently.
Just look at the United States. This country has some of the hardest working people in the world. Yet, if you were to believe all that is said in the media and in schools, you would walk away believing that every well-to-do American is really just a lucky criminal who stole everything they own at the expense of the lazy and ignorant, who happen to be lazy because the hard workers stole all the opportunities. The arguement doesn't hold water.
The lazy and ignorant can't see and don't understand, thus they are easy to make jealous even though they have exactly what they've earned, nothing. Even when given something, they will destroy it and end up with nothing. Why? Because they didn't earn it. The same is true of the competitor who hasn't earned the business. They might start off with some easy money converting a few unsuspecting customers, but in the end they still have to deliver the goods. And that's where they fall down.
Put out as good a product as you can and improve it where you can. Just stay the course. Those who depend on cutting you down for their income will eventually fail because they aren't nearly as capable as you are. If they were that capable of putting out a good product, they wouldn't need to resort to cutting you down in order to get business.