Poor Service & Technician broke HDMI cable

Our TV broke down on the 19th Feb 2018 and we had it fixed by your service department. Then on the 29th March the TV broke again and we make contact with your service department and they only picked the TV up on the 5th April. Once the TV was fixed the technician delivered on Monday 9th April. Neither my husband nor I was at home but our helper was home and opened for the technician. While installing the TV the technician broke the HDMI cable. The cable input was bent to at 45+degree angle. We when complained we were told that the technician said that the HDMI cable was broken when they got there, which is a blatant lie. The only people that touched the HDMI cable by removing it from the wall and or reinstalling the TV was them. Calvin (the technician) assisted us in Feb and in April. Calvin went on the say that my husband knew the cable was bent from Feb 2018, which is also a blatant lie as the HDMI cable & Channel worked fine from February till end March when the TV broke again. I called numerous times to the call center and send various emails that and nobody respond to the email. I spoke to Roegshaana Steenkamp, then yesterday I spoke to Lindiwe and asked to speak to Roegshaana manager and I was kept waiting for about 10 mins and then the call cut out and I was asked to rate the service! Doubt I will ever purchase Hi Sense again, the service is terrible.