I was unjustly banned, what should I do?

I was about to play my ultimate team now and I can't log in, and I checked my email and saw that you said I was using coin distribution and buying coins not from you, and that is a lie. All the coins I had in the game were earned by me in the game, in packs, in squad battles, in rivals, and in fut champs. And since I had a lot of coins today, I only bought 3 or 4 players, I tried them out and didn't like them, so I sold them. And my account was banned because of this, which is a bit sad. It's a normal thing, so please can you review my case.