How many warnings till ban

I was thinking of buying more than a mil or something today but I remembered that I've already received 2 'let's talk emails' from ea, one for comfort trade and one for player bid.
Would I get banned if I bought more coins now? Cause I've got a decent team that I don't want to lose.:(:(

DO NOT BUY COINS MORE THAN ONCE

I received my second warning from EA when i bought 2million ( platform origin) my whole ultimate team was deleted. I lost players, my record, trophies and so forth.

3rd warning results in permanent ban.