Excuse Me...
Dish Network's customer service call centers are based in the USA. They do, however, employ technicians who are not of caucasian descent. To not do so would be discrimination by race, prosecutable under federal and state labor laws. They have hired a 3rd party firm to handle the yellowcard swap, and I don't know where their call centers are, but I can tell you from my own personal knowledge that there is a call center located near Virginia Tech in Virginia, USA. Its' location explains some of the problem with getting heavily accented technicians, because some people from other countries, such as China, India, Mexico, etc. come here to go to college, and end up working at Echostar part-time, maybe full-time in the summer because they need jobs. (Hey, they can't all flip burgers or bag groceries.)
So, if you can't understand the person, hope they can understand you, and say "I'm terribly sorry, but I cannot understand what you're saying." Then hang up and call back.