DishTV — Non stop calls from dishtv

I am receiving multiple promotion phone calls from the Dishtv. I have deactivated the dishtv services in mid of 2020.

Since then I keep getting phone calls to activate the service or promote with an offer. I get calls on daily basis. (8-10 calls a day)

I had requested several times to remove my number from the system and since a year there is no positive response.

I have even blocked multiple numbers and i still get calls from new numbers.