Where is my referral credit?

I joined bulb after following a link a friend posted offering me £50 credit.

I didn’t receive any emails from Bulb like a welcome pack within a day or so, so phoned bulb to check that my application had progressed and they said that everything was fine. I did indeed successfully transferred over to Bulb.

I’ve just logged on to my account for perhaps the first time and can’t see my £50 anywhere. Am I looking in the wrong place, or is the £50 credit missing from my account as I believe it is?