Working on the retail side of things I see this all the time. It is typical for dish to wait till you're gone & with another provider before offering anything significant.
I don't blame folks for looking into getting a better price. TV is expensive & the only deals are for new customers. If that means switching providers every 2 yrs to save money it's no fault of the consumer for trying with their current provider or a new 1 to get a cheaper bill.
I totally agree. All the deals are for new customers. There are others besides myself who shop around for tv service.