Hisence not so SMART TV

My HISENCE not that SMART TV has some apps that do not work. I emailed the CUSTOMER SERVICE about that. Got some stock replies like " I will look into the problem and call you back". After 3 weeks, emails and telephone calls I am as I was at the beginning. They have no clue what they are doing, they just can't help. Their knowledge of the product is close to total ignorance. Even the so called manager of HELP DESK or CUSTOMER SERVICE (I was told his name is ROBIN), has an attitude of ignoring the customers, not returning the calls. So, if anyone is looking for a real SMART TV, think carefully what you buy.