The letters, which were sent on Friday to executives at Verizon Communications Inc, Cablevision Systems Corp and Time Warner Cable Inc, ask each company to provide copies of all the disclosures they have made to customers, as well as copies of any testing they may have done to study their Internet speeds. “New Yorkers deserve the Internet speeds they pay for. But, it turns out, many of us may be paying for one thing, and getting another,” New York Attorney General Eric Schneiderman said in a statement.