I'll thank you to mind your own business
Don't interfere in my affairs; don't pry or be nosy. I'll thank you to mind your own business, OK? I can take care of my problems just fine. I'll thank you to mind your own business and stop asking me about my finances.
I'll thank you to mind your own business.
Fig. a version of Mind your own business. (Shows a little anger.) Tom: How much did this cost? Jane: I'll thank you to mind your own business. Bob: Is your house in your name or your brother's? John: I'll thank you to mind your own business.