A Cablevision tech support rep told us that if your Cablevision tech arrives past the service window, you’re entitled to a $20 credit (this press release supports it). And if you’re in the Bronx or Brooklyn, you can get a free month of cable TV if the tech shows up late (this is applied on a case-by-case basis but it is possible. Should the tech pull a noshow, call customer service and speak to a supervisor, who may offer you credits (usually $40-$50) or a free month depending on your customer history. Inside, Which customer service number to call, based on the first four digits of your account number: