Verizon Communications Inc said on Thursday that Walt Disney Co and Twenty-First Century Fox are not running ads promoting the wireless carrier's recently launched FiOS Custom TV service on its channels in the New York market. Since Verizon unveiled its cheaper, slimmer pay-TV plan on Sunday, Disney, Comcast Corp's NBCUniversal and 21st Century Fox have pushed back and said Verizon's FiOS TV was violating existing agreements.