We're sorry to know about the difficulty reaching our support centre. Due to precautionary measures to protect our staff from the COVID-19 outbreak, TPG’s telephone support team members are transitioning to working from home. We appreciate your patience as you may experience longer wait times. TPG customer support channels during COVID-19 outbreak
We've seen that the the issue with the modem/router and the outgoing call has been raised to our Engineering Team for further investigation and confirmed working.
Should you need further assistance, feel free to search community for help or chat with us at https://www.tpg.com.au/support/contact/ and we'd be glad to assist you.