The 43-year-old part-time stripper, who entered the house on Friday, claimed she and her husband trawled through thousands of pounds worth of Kit Kat bars to find one of the 100 golden tickets for the draw.
She was one of 34 Golden Ticket holders to make it onto the show and was then chosen by housemates, who were given a lottery ball machine to pick the new entrant.
However, it has since been revealed that Susie has auditioned for the show several times, which is why several of the housemates recognised her when she arrived, and speculation that the ticket was bought on eBay for £4,000 has raised suspicion.
The furore, already being dubbed "Goldengate", has forced viewers to complain to Channel 4, with additional protests to Ofcom.
An Ofcom spokesperson said: "We have had complaints claiming the competition is fixed and we are looking into that to see if we need to take it further.
"We have rules, which say that competitions must be conducted fairly and we look into every complaint we receive."
A Channel 4 spokesperson said: "The machine and the balls were checked by an independent adjudicator in the 'Big Brother' garden immediately prior to the draw.
"Susie then won the chance to be a housemate after Aislyene picked her numbered ball from the machine. The selection process was totally random."
The Advertising Standards Authority has now been passed the complaints from Ofcom because the Golden Tickets were advertised on Kit Kat packets, forcing the ASA to investigate claims of any wrongdoing.
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