Adidas and the BBC had already said they had not worked with Greedier Social Media, despite being named as clients on the Manchester-based company’s website. Both said they had subsequently been in contact with Greedier.
On Friday, PRWeek noticed that the Adidas logo had been replaced by that of Audi. A spokesperson for the car brand told PRWeek: "Audi UK has no knowledge of, or involvement with, this organisation"
The BBC logo remains on the website, as does the logo of film company Universal.
Update on Tuesday afternoon: Universal confirmed to PRWeek that it does not work with Greedie
It comes amid growing concern about influencers securing commercial deals after buying followings and engagement on social media. Earlier this month, US marketing agency Mediakix said it secured brand sponsorship deals for two fictitious influencers after acquiring Instagram followers for less than $300 (£231).
On its website, Greedier boasts that customers can "become a social media celebrity, from only £2.99".
The firm says its services include providing "UK Twitter followers, targeted Facebook likes, Instagram followers [and] YouTube views".
Greedier did not respond to PRWeek’s request to comment.