MTN - CALL DROPPING

I am shocked and dismayed at the appalling service that I have received from MTN or the LACK of it. I have been to a technical branch at Clearwater on the West Rand possibly 7 or 8 times to get help. I have mailed the Customer care line, I have dilled 135 and I get a ROBOT. I can't speak to a human on this 135 number. My issue is that since November 2023 my phone keeps dropping calls both outgoing and incoming, I make a call and within 1 or 2 minutes, although the times vary, the call drops. I have done 2 x sim swops and even bought a NEW PHONE. Nothing is working. I live alone and om on permanent oxygen. I cannot get this issue resolved. I was told that MTN is moving over to 4G and 5G and they have randomly picked my number to test this !! How true this is, I don't know. I am not a healthy person and am also elderly. I CANNOT live without contact with the outside world. I NEED HELP WITH THIS ISSUE AND MTN CANNOT HELP. IF THERE IS ANYONE out there ............ Message me on FB.