Okay yesterday I requested that TradersWay cancel the refunds from their side (if it hasn't been stopped by their bank already). My bank has stated that the transaction should not have gone through anyway, since they would have refunded to a credit card number (my card number) which does not correlate to an account with the same number. My MasterCard that I used to deposit funds to TradersWay is not a real credit card, it is the debit card linked to my cheque account, the number of which TW will not have.
So I have asked, now I wait for their reply.