normally bank will not sms or email u. they will straight call u directly. But still it is better u call the bank directly or email to their customer service. i presume that bank closed on sunday, thats why u can't call them?
what did the sms say besides that? did it ask u to call their number or what?dont call any of the number in the sms. call directly to ur bank telephone number perhaps on monday morning. careful with fraud ya.