GiffGaff is showing roaming charge--how to stop?

[#1]

I have seen on some forums that the service provider can stop this is this the way?

This phone is the A9950 2 sim factory unlocked, china.=G. Note.

Cheers

[#2]

I would contact an agent if it is a billing issue. http://www.giffgaff.com/support/ask