Bad service and they don't care about the customers

I have 4G and 5G coverage, apparently in my area but this is the third time complaining and still not one of your support people made contact with me, i recently upgraded to the 4G unlimited plan on my account but im not connecting when im home, im unable to access based on what the plan info states. I cannot stream 360p videos without interruptions, my whatsapp does not stay connected as i have to keep restarting my router, im unable to be on a video call without the call being cut, when i do a speed test it states my internet is very slow, is that what i will be paying for on my billing date ? a very slow connection for R479, if no one can respond to me via email by the end of today i will cancel the sim as im not paying for something i cannot use. When it comes to billing date you expect payment so im expecting the connection promised or im quitting this network from today.