Sick and damn tired!!!!

Wow, where do I even start....I purchased a Hisense TV from Lewis stores since last year the remote stopped working, at least this is what I thought, I bought a universal one that did not work, bought one from takealot also did not work, then decided to get an original from Hisense in December which works, however it is the sensor in the TV that does not work!!!! They sent the TV to PE, the technician confirmed that there is nothing wrong as the TV plays and everything!!! I understand that, but the problem is the sensor inside the TV, I cannot adjust the volume on the TV, I cannot even watch a movie!!! And to top it off, they claim that the maintenance contract expired on the 5th of January 2021, well not according to the letters Lewis has been sending me!! The last one I got in January states that the contract expires on the 31st of January 2021, now my question is, who's at fault here??? I do not send statements to myself!!!! Also their communication is so so poor!!!! They never phoned me today to tell me that the TV will be delivered, my sister informed me that it was delivered, the delivery guy also told her that Hisense will collect the TV from me!!! I phoned customer care head office and they say that this is not true the TV will not be collected, so clearly I am being messed around!!!! I am sick and tired of the incompetence!!!!!! Why is it my fault that the Maintenance expiry date was printed wrong? What is the purpose of the contract if no one is willing to assist you??? THE PROBLEM IS THE DAMN SENSOR AND NOT THE REMOTE FOR GOD's SAKE!