BA does it again, the WORST airline in the world and took my money and dumped me

Booking reference with BA: UPRZHA from Heathrow to Manchester on 26 April 2023 BA marked me down as a NO SHOW and refuse to refund me the flight. Meanwhile the reason I was not on it and after repeated phone calls to BA and speaking to their office in INDIA!! - Priya, Dishu, Rihanna to name a few - some had no idea where Cape Town was, where I was stranded as BA did not let me board their BA flight from CT to LHR on 25 April 2023 as they were overbooked and dumped me and I had booked a seat too. The check in guaranteed me a flight the next night and promised to alert my connection the following morning - of course they did not and by the time the Indian office even understood the problem, let alone knew where I was the BA UK had marked me down as a NO SHOW. It was a tumultuous time and in total distress I had to leave the CT airport and find somewhere to stay at my expense and not get to my ailing mother with no carer as I was due there in UK. The BA check in said there was no one in SA now who could help me as all their offices are now closed down at the airports!!! So I had to deal with BA India who had no idea about South Africa!!! The check in staff said they could do nothing else. I have tried to no avail to get at least the minimum of a full refund for my LHR - Man flight but BA totally ignore or refuse my requests. It is their fault I did not make the connection as they ditched me in Cape Town. Both flights were with BA and they knew it and yet they treated me worse than a ******** and still do. While waiting for hours at the check in, I did note that night of the 25th April they had a lot of ‘friends’ of the crew travelling and paying customers were turned away! There is no excuse to take my money, not offer me the service and now not come right and ignore or try and pretend they have broken all protocol and the rules and basically ****** my money and not refunded fully at the very least.