The TV watchdog has had 28 objections to the audition at the weekend, where Alexandr stunned the judges with his tricks.
And Simon Cowell's reaction to the outlandish audition has also got the show in hot water, with his comment being labelled 'blasphemous'.
"We’ll assess these complaints before deciding whether to investigate or not," a spokesperson for Ofcom said today.
The regulator better be ready to staff the phones next month if Alexandr gets through to the live shows as he's promised an even more dare devil performance for the semi-finals.
He teased: "If I get to the Semi-Finals, I really want to show my new trick! I’m not even sure it’s possible but I’m really trying to deliver something new that audiences have never seen before.
"I’ve never tried this trick before so right now, I’m in the process of rehearsing so I can present it to Britain’s Got Talent audiences and to the Judges."
Meanwhile, Ofcom also revealed that there has also been a complaint made about animal cruelty regarding dancing dog Trip Hazard and trainer Lucy Heath following their routine.
The judges gave the pair four yeses through to the next round after a performance to Christina Aguilera's Candyman.
Britain's Got Talent continues Saturday nights on ITV.