Customer Complaint

2018 I bought a coffee table, kitchen unite and TV stand cash from Lewis Nelspruit Mpumalanga, within 6 months the TV started piling off went to the branch and they exchanged it soon after that it did the same thing with the coffee table they came collected it and after a while the TV again started. Went back told them, they than told me they will call me n arrange for a collection. Everytime I went there they told me they will call but never did, and what's worse is everytime I went back they had a different manager and that alone it tells you the is something wrong with that branch. Now I went to the store they telling me they won't be able to assist now they claiming the coffee table is not even in store. Worse case they have a new manager with new staff, new manager called Knowledge one of the guys that used to work there and he had confirmed my story even told them the time they left the coffee table was in store n previous manager did agree to cancel the purchase so we take something else to the same value and need be we can add money so we can get what we want. But the arrogant new Manager said no since the is no paper thrill about my complain but i mean I don't work at Lewis and I don't know how they do things so now why must I be affected by there incompetency. In a period off 2years they have changed more that 3 managers now it's even the whole staff. New manager said he'll call me but till this day I'm still waiting, have called there Head Office and I was told they will investigate the matter still with no justice.