I'd be happy to take this to PM for you to investigate further.
What I will need are screenshots that clearly state that we have advised you that you're refer a friend credit has been processed but with the sensitive information this will entail, I'll need to do this over PM
I'm really sorry you've not yet received your refer a friend reward. I am going to send you a private message to enable me to help investigate this further. Please look out for the purple envelope in the top right of your screen.