OK Check the card inside. Is it a Dish or Bell Expressvu card? If it is a Dish card, then the receiver does have Bell software on it. It happens when the receivers have factory software and are pointed to Bell Expressvu's satellite.
If you want to sell it, you might be able to get something for it on Ebay; just say that it has EV software.
If you are a current Dish subscriber, you do have options.
If you have credit card autopay, they will ship equipment for free. If not, shipping is 14.99, I think. You can add the reciever to yuor account. Tell then that you were pointing your dish and accidentally got in on EV, then the receiver turned to EV. They will ask you to pay $50 for an exchange for a remanufactured receiver.