>>>offer me a full refund but I would have to be at my computer to go through the refund process.
What a total load of rubbish.
You have already been scammed once, dont risk it again.
And stop being so gullible, what sort of excuse is "I stupidly panicked & felt i had no choice but to go along with it".
If THEY rang YOU out the blue then you are under no obligation to even talk to them let alone give them any money.
Next time hang up on these type of people and you wont get scammed again.