TasneemaHi,
sometimes Bet365 system automatically block the account for security reason. We see that you talk with them via phone, and already finish phone verification. We can advise you to wait 48 hours since phone call made, and if still can not log into your account, then ask them again. It's possible to request you some other documents like, PVC code, or sending your ID. Once you finish with verification, your account will be open again. Bet365 is one of the most secure and reliable betting web site, so you can not expect any problems with them. They just want to make sure, that everything is OK with your account. If you need any further help, please don't hesitate to reach us. Also we have other topic where you can read more about your case:
http://www.bet2bonus.com/forum/bet365-account-verification-1-20.html Good luck!