Business not really interested to serve their clients needs

I phoned this business (Sinotec TV) on 31 July 2024, to see if they will be able to assist me. I have a 55' Skyworth Smart TV and misplaced it's legs, due to the fact that it was mounted to the wall for over three years. First time I phoned them, very friendly and willing, but now after all this time, numerous calls, most which was not answered once transferred by the reception to the spares department, emails which was requested, with details of my enquiry, their promises to get back to me as soon as they confirm that they have what I ask for, and even that never happened. I don't think that I am unreasonable to phone a business which should be able to assist me with my need of the TV legs, I was never rude or harsh, but I can't understand that a business can survive in these days with an attitude like this to clients phone them in the hope that they will be helped by that business. I don't think it is unreasonable to expect them to keep their promise to get back to me with either a positive or negative answer.