2 Months after buying a TV, still cannot watch anything on it! SO disgusted!

I am so tired of getting no service from Pick 'n Pay after 2 months of struggling with my TV! 2 months and 2 days ago, purchased an Aim 55inch TV - Struggled for a month to get a technician to assist me with upgrading the software (because apparently its okay to sell Tv's still on Android 7) and a month after that I am still struggling! All the apps freeze, can't get DSTV NOW as advertised and on Youtube the TV literally freezes to the point where the only way to switch it off is at the plug. I am so tired of this TV - I want a working TV for the price I paid!!!!!!!!!!!! I keep getting calls from people saying they will sort it out but then hear nothing for a few days again until I follow up. I'm tired of this ******* TV, I want this sorted out Pick 'n Pay!