Netflix may be ending a series of controversial new error messages for now, but it’s also doubling down on claims that Verizon is at fault when it comes to breakdowns in video streaming. And Netflix’s latest broadside against the Internet provider is characteristically flippant. The blow comes in response to a Verizon cease-and-desist letter sent to Netflix last week. In the letter, Verizon demanded that Netflix stop telling users that drops in streaming performance was the result of congestion on Verizon’s network — and threatened to sue if Netflix didn’t provide evidence backing up its claims. Now Netflix has refused to comply with Verizon’s data request, instead reiterating arguments that Verizon hasn’t done enough to accommodate its subscribers’ requests for streaming video.