Welcome to WebmasterWorld.
First thing you need to realize is the difference between "accidental clicks" and "invalid clicks"
Accidental clicks could possibly be because of user confusion on your site - you want to make sure your ads aren't too close to the navigation, that they have enough contrast not to be mistaken for navigation, or that they're not too blended in with your content.
It's important that you figure this out, because this could put your account at risk. One quick way to see if it's an issue on your end is to turn up the contrast on your ads - add a header that says "Advertising" or "Sponsored" (and nothing else!) and maybe add a background or a border that is different from the rest of your site. Run that for a month and see if you accidental click rate goes down.
Invalid clicks can include bogus clicks from invalid traffic. You have something of a better chance of keeping your account if you have these, because Google has gotten a lot better at detecting them and is less likely to ding you if they don't think you're responsible for them.
Last week I tweaked one page’s content (correctly) to get a high paying ads, it worked my earnings were up massively however when i checked later that night it was all deducted.
I don't know how you're doing this, but Google isn't crazy about this (specially if they think you're writing for ads and not users) and that might be why you got all your revenue taken back.
There's no difference in personal accounts vs company accounts; I've had both.
Another thing that is happening is that the invalid bot traffic activity has gone WAY up over the past year. I never had much in the way of adjustments either, but Google actually told me I had some kind of ad clicking bot network hitting my sites hard - they said they were aware of it, so my account wasn't at risk, but despite repeated pleas they won't give me any more information so I can block or identify this traffic. Very frustrating, but AdSense is what it is.
My only source of income for my site is Google AdSense
Finally - fix this. Start working on alternatives. If your traffic is valid and it's growing, start now at developing direct advertising, explore other ad networks or affiliate ads. You're already experiencing problems with AdSense - you don't want to be in the position of being completely stuck if something happens and your account is suspended or closed. Google protects the Advertisers at all costs, and if your account is considered to be a significant risk to them (even if you did NOTHING wrong - all that has to happen is that your account for some reason attracts trouble) you could be at risk.
You have to think about whether you want to base all your income for the site on another company, in a situation where you really have very little control. AdSense can be great, but it's good to have alternatives too.