It's technically a 4-strike system.
Strike 1: 10-game chat restriction.
Strike 2: 25-game chat restriction.
Strike 3: 2-week ban.
Strike 4: Permanent ban.
In order to drop down one punishment tier you have to go 3 months without being punished again, meaning that you have to put in a genuine effort to reform. Also, reform cards never show every single game that you were reported in-there's no need to. If you've been punished it's because you showed consistent negative behavior across multiple games including the 1-3 games included in your Reform Card. Speaking of which, if you post yours here then we can try to help you understand why you got banned in the first place.