attempted fraud?

steamgames.com, apparently a UK based company, yesterday morning tried to debit my credit card 4 times in as many minutes for R1515 each time ($100), that's $400. I instantly reported this to my bank as suspected fraudulent transactions. The bank cancelled my card immediately and as they did so there was the fourth attempt. Amazing. I see others have reported the same problem with steamgames on Reddit. I dont play games, and have never dealt with this company.

CAUTION!