Kasikorn. Good app and online systems. Also I presume you will need to renew your visa each year. Therefore on the day of renewal you need a current bank statement Their branch at the immigration office opens at 8am and they know what to do.
Technically it needs to be done on the day. The bank has a standard letter and statements that it will produce at your request. Depending on the visa office, some banks have branches at the office and open early to accommodate this requirement