Global Virtue, a private firm, has been banned from raising funds for charity.
The Office of the Commissioner of Charities (COC) in announcing this on Thursday said it had received complaints about teenagers representing the company soliciting donations and selling vouchers in public, purportedly for charity.
Responding to queries from The Straits Times, a spokesman for the COC's Office said it was first made aware of these activities late last year "and has been monitoring the matter since". It then started investigations after receiving more feedback in the first quarter of this year.
The company claimed that part of the sale proceeds goes to non-profit and charitable organisations as part of its corporate social responsibility programme.
But investigations by the COC showed the firm had "no proper control over the vouchers or sale proceeds and no proper accounting records were maintained".
The COC concluded that the fund-raising appeals were "improperly administered" by its directors, Mr Muhammad Zuhairi Abdullah and Ms Mohammad Rudi Muhammad Suffian, and its adviser, Mr Jeffri Pawel.
Mr Pawel is also in charge of the firm's fund-raising appeals.