A merger between Comcast and Time Warner Cable now faces another hurdle in the state of New York as advocacy group Common Cause filed a formal complaint with the Public Service Commission (PSC) against the deal going through.

The 17-page complaint will be reviewed among other recent filings and PSC will announce a decision in October. Common Cause, a pro-rights group says it is "holding power accountable," claims that a combined Comcast-Time Warner company is not in the best interests of the New York public.

"A greatly enlarged, post-merger entity will have even more difficulty and less incentive to provide acceptable customer service," said Susan Lerner from Common Cause New York.

The proposed $45 billion merger between the two would combine the nation's No. 1 and No. 2 cable providers and has come under regulatory scrutiny due to its implications. The deal requires approval from the Federal Communications Commission (FCC) and the Department of Justice. A Consumer Reports poll earlier this summer indicated that 56 percent of Americans oppose the merger, 11 percent support it, and 32 percent had no opinion on the deal.

According to The Washington Post, around 10 percent of the new company's subscribers would come from New York, an area that is placing heavy scrutiny on the deal. New York Gov. Andrew Cuomo stated earlier this year that he would give the merger a "hands-on review." The PSC does have the ability to block the merger within the state, although it has no jurisdiction outside.

New York City comptroller Scott Stringer has also voiced his concerns about a Comcast-Time Warner behemoth. A larger company, he says, would have less incentive than a smaller one to provide access to low-income demographics.

"It is critical that the PSC not only press Comcast to significantly expand the reach of Internet Essentials, but also that it engage in appropriate oversight to ensure that the company is meeting its commitments to low-income residents of the Empire State," Stringer wrote in a five-page draft he submitted to Capital.

The FCC and the Department of Justice are also currently in the midst of reviewing other telecommunication mergers. There's the huge AT&T-DirecTV deal on the horizon, and the reluctance of the agencies has already caused Sprint to back off from acquiring T-Mobile. In its place, however, the commission will now have to review a smaller $15 billion bid for T-Mobile from French carrier Iliad.

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