No need to walk over to a store to load up your balance, you can easily do this on Messenger!
To start, open a chat with GCash (m.me/gcashofficial), select Money then Buy Load.
Enter the mobile number you want to buy load for. Then, choose how much you want to load up, or pick a load promo. Once done, confirm your purchase.
Note: make sure you entered the right mobile number and amount as all transactions are considered final
You'll then receive a message in the chat informing you that you have made your Buy Load purchase.