Payment Gateway to use when you bank account is in a different country

[Celmo]

I am a South African resident that wants to setup my shop to market to the US. However I used to live in the UK and still have a bank account there. Is there a payment gateway that supports South African addresses that can pay into international bank accounts. Or do I have to setup with a South African Bank account? What payment gateaway is best for South Africans as we cannot use Shopify payments.