DISH NETWORK Dish refuses to acknowledge payment I made and even after I PROVED the check was CASHED by them! Internet

Dish refuses to acknowledge my payment even after I have PROVEN the check was CASHED by them!

I advise ANYONE who has Dish to watch your bill VERY closely and keep track of EVERY transaction you have with them! They are trying to tell me I missed a payment and when I PAID to get the cancelled check from the bank and PAID to FAX it to them to PROVE it had been cashed they are still telling me I have to RE-SEND the copy of the check because THEY don't have the copy I sent. THEY dropped the ball BIG TIME on this and now it is costing me MORE money to fix their ERROR! I am disconnecting my Dish and I will NEVER use them again! This is the poorest of poor customer service!