Frequency Cutter Help!

I want to cancel all frequencies available at my room. Is it possible to seize all available frequencies interfering with my gadgets in my periphery?

 

My 7.1 channel has started to receive frequency of mobile operations and local radio stations and everything is fine of the manufacturer. And the only solution I see is to nullify those specific frequencies at my space.

 

Please, help for this Mr No Idea!