Sling is popularly known for its live TV services. It offers almost all the popular channels available in the US along with some foreign channels at pocket friendly rates. With Sling TV app, anyone can get access to all TV channels with ease of mind and turn mobile into a TV. However, what most people don't know is the fact that Sling is not free from frequent errors. In such a case, contacting Sling Customer Service is the best thing that one can do. What's more good about Sling is that anyone can cancel Sling subscription and get Sling refund.