Hi there, I am having exactly the same problem. I withdrew on my card of which I used to fund, on the 14th, as of the 24th I am still to see my money materialise in my bank account. This is something I have completed dozens of times before, all without issue.
After contacted IG Friday last week, I was told I needed to talk to my bank. I called my bank first thing this morning, they tell me they have no visibility, and it's on IG to track and trace the funds, as they are the ones that issued it. After calling IG this morning, I was informed I would have a receipt emailed within a few hours, however that has not happened. Hopefully they will resolve this for me soon.
I wonder if other people are having the same problem right now due to a broader system issue?