TCL — No response for repair

Worst service by TCL. I bought TCL tv in Amazon and I found that there is a product issue in the display. Getting some verticle lines in tv, then I complained in TCL customer care. They said our technical person will come in a week to resolve the problem. It's been 1 month till now nobody come and fix the issue. I keep on calling every day and they are telling he will come today.
This is my complaint number 2051801.