According to their terms and conditions, TonyBet will never disable your account without giving you a reason. If this is the case, legal documents will be requested and processed when you provide them, after which your account will be restored, but if you continue to face any technical issues such as account suspension, disablement, or other related issues, you can reach out to their customer care.
Note that account issues might also be caused by some bugs, which is not unusual. Their technical team should take care of that from time to time.