Published in: 通过银行充值 Top up with Isla Bank (A Thrift Bank) Author Published on: Here are the steps to transfer funds using the ISLA BANK app. Step 1 Head to the nearest Isla Bank. Step 2 Choose the receiving bank, either "Asenso" or "Rural Bank of Guinobatan." Step 3 Provide the recipient's account information which can be found on the sample form of the Top Up Channel.