“I had some hope that the Comcast merger would have an increase in quality of service,” she said, “but I guess I’m just going to keep living in the 1990s of Internet and cable service with TWC.”

Some of the frustration with big, expensive cable television packages has helped to fuel the trend of cord-cutting and increasing competition from different services, with newcomers like Apple TV, Hulu and Amazon, and single-channel offerings like HBO Go. Still, users need strong Wi-Fi and Internet access, pressuring Time Warner Cable, Verizon and others to improve the delivery of streaming services.

Analysts say that the ill-fated Comcast deal could lay the groundwork for significant improvements in customer service and satisfaction at Time Warner Cable.

The company spent the last year preparing its network to be turned over to Comcast in the best shape possible. Today, said Richard Greenfield, a media and technology analyst at BTIG: “Broadband speeds are higher. Customer service has improved. I think they’ve gone out of their way to invest in their consumer experience to position for if the deal didn’t happen they could simply move forward.”

In an interview, Robert D. Marcus, the chief executive of Time Warner Cable, listed improvements to customer service he said the company began in the last year. They include introducing TWC Maxx — which has significantly faster Internet speeds (up to six times faster in some cases), “enhanced DVR” with more storage and more on-demand video choices — to roughly 10 markets, including New York and Los Angeles, which he called a “tremendous improvement of customer service across the board.”

Mr. Marcus said that the company was focused on increasing broadband speeds to industry-leading levels, and that Time Warner Cable’s standard tier of service was faster than Comcast’s standard tier. He also said the company was committed to making “meaningful” improvements to its video product, with more video on demand and digital offerings. And he said the company had enhanced its phone product recently, with free calls to more foreign countries, including Mexico, Canada, China and India.

“We are firing on all cylinders,” Mr. Marcus said. “Customer service is getting way better as well.”