Charter Communications verbally attacked Time Warner Cable's executives on Tuesday, saying they "failed" in their operating plan. Charter made these comments amid efforts to push its bid for Time Warner, wrote Reuters.

Charter executives unleashed the said comments during a conference call one day after launching a $132.50-per-share ($36.3 billion) offer for Time Warner. The bid was rejected by Time Warner's board, saying it is "grossly inadequate," the report detailed.

Charter has been trying to acquire Time Warner for six months and change the decision of its shareholders. The New York-based cable operator has rejected three of Charter's offers, the report said.

According to research company JD Power, Time Warner falls last in the customer satisfaction rankings in three out of four US regions. In the West, the company ranks seventh out of the nine firms surveyed. Charter, on the other hand, ranks second to the last in the said three regions, Reuters reported.

In a response to the harsh comments released by Charter, Time Warner said in a statement: "We are confident in our standalone plan and we are not going to let Charter steal the company."