If your transaction remains pending for an extended period on, you may have the option to cancel it 1-888-636-8190. For other blockchains, you'll need to wait until it is either processed or dropped by the network.1-888-636-8190 https://www.historycouncilvic.org.au/garyarma322453/can_i_cancel_a_pending_transaction_on_trust_wallet