[mothered]

1st: I'm legit scared will they go through my whole account history & go ban/block/blacklist or even legal against me??

Assessing your account history Is a possibility but rest assured, there's nothing to suggest they'll take It legally.

2nd: Is account closure incoming

Can't say for sure.

Even If they'll close the account, It doesn't Impact on you personally, so don't worry about It.

3rd: Have I pushed it too far where i can get busted, should i call it off while i've the time & write the loss in my books, considering the legal consequences which may or may not arise at a later stage?

I don't know how many SEs you've performed over the years, nor their nature and value and whether or not suspicious activity was Identified by the company.

F**K I"M NERVOUS & SCARED     

Don't be.

As you can see In their message, they're offering their assistance, which demonstrates they're on your side.