Here is the letter I sent when resigning myself from a business. There's a huge backstory to what happened but I won't go over in the post unless asked.
“I wish to humbly inform you that I can no longer be a part of this organization effective immediately.
There have been numerous issues of gross undermining of my contributions, false and malevolent accusations, illegal and fraudulent activities. I have brought up my grievances and concerns many times and the acts just progressed further.
Ergo, my decision.
I regret that I am unable to serve a standard notice period. The circumstances, however, have not been favorable at all for me.
Any paperwork in my possession will be stored and given within 2 days time. All electronic documents will be emailed to the company email, such as drivers license documentation, insurance information, registration photos, documentation from the recent audit etc.
All accounts in my name will be or are already closed.
Any accounts i.e Quickbooks and Sinc for payroll, that are linked through my email will be changed to the business email with a password written down and provided within the next 2 days as well”