Mikomi LCD15796BF PLEASE HELP

Question

Is tv is the worst tv ever , i dotn know wether its the TV or the ditial reciver box or my airle?????????? i get so annoyed with my Tv that i ended but throughing across the room , i cant get bbc channles or kids channles. and most of the time it doesnt work and the sound brakes up and the picturre brakes up. i am seriosly annoyed!!!!!!