Definite language barriers

I have an existing account with Xfinity.  I called to get the least charges for my wifi because I need it only for smart thermostats we have in a home we use only a few weeks in the year.  I was on the phone for 45 minutes with a man who couldn't speak very good English and instead of changing our account he in fact seemed to think we needed a new account.  I now have new equipment being sent that I'm expected to return.  I spoke to another agent later to figure out why we have new equipment coming.  She asked questions that were irrevelent and i spent another 20 minutes on the phone with her.  I was very frustrated and impatient and she informed me at the end of our conversation that the order was probably mixed up because of my bad attitude.  Frustrated or not, I worked in customer service for most of my career and was taught the customer was always right.  Xfinity saving money by farming out customer service to those without command of the English language and customer service training that would insult a customer isn't satisfactory.  I will be glad when we no longer have need of this service.  Get agents in the USA where you make your profit.