How do I cancel my payment for tax file, I don't want to e-file with Turbo tax and use another tax preparer. I have already made payment but unable to cancel order.

How do I cancel my payment for tax file, I don't want to e-file with Turbo tax and use another tax preparer. I have already made payment but unable to cancel order. I cannot request callback as I have a foreign no. and customer support number no one is picking up.