Disappearing bank accounts

My accounts keeps disappearing on the banking app and the ussd refuses access to my gard earned cash my life is stuck with no access to my funds, I didn't even receive a notification as of why is it.that way. And I've been unable to work because of this. I'm a self employed person who rely on online hustling to make living since the unemployment rate is high. Down the bank just decide to refuse me access to my money. It's unacceptable and the bank should learn to communicate like they always do with sms.