Time Warner Cable (TWC) has mistreated its customers for decades and should face a wide-ranging investigation as part of its proposed merger with Comcast, a new complaint to the Federal Communications Commission says.

Telecom analyst Bruce Kushnick of New Networks Institute, who recently petitioned the FCC to investigate Verizon for perjury, is now taking aim at TWC’s billing practices and customer service.

“We call for the halt of the proposed Time Warner Cable-Comcast merger, but more importantly, this Petition for Investigation & Complaint calls for the immediate start of a series of investigations,” Kushnick and Audit Director Tom Allibone of telecom customer advocacy group Teletruth write in a complaint. It was filed with the FCC two weeks ago and is being filed today with New York state officials, who are also examining the merger.

Kushnick and Allibone point out that Comcast and TWC are two of the most hated companies in the US, according to the American Customer Satisfaction Index, and they lay out five areas the FCC should investigate. One of those is related to Kushnick’s own experience in which his Time Warner Cable service was advertised at $89.99 per month and shot up to $190.77 less than two years later.

More: Petition: Time Warner Cable Mistreats Customers, Shouldn’t Merge With Comcast