Absolutely shocking services and bad attitudes

So it has now been 2 months I have been trying to upgrade online. First the reason I could not upgrade was my device was not in stock I logged on numerous times to check and tried the live chat. That was extremely helpful as all they could say was check again at a later stage oh and my favourite try the store locator link that checks which store has your device. This does not work at all every area you try does not pick up anything. Finally my device is in stock I do my order online and I am told an agent will contact you within in 24 hours 48 hours later nothing I call to follow up on my reference. Guess what sorry there was a glitch and your order has not been done try again phone goes dead please rate the agents service I try again online and get the same reference. call again and once again sorry there was a glitch. Let me assist you with this over the phone give all the details and get to the device bundle and oh sorry we no longer have stock. I then asked ok so how long to get the stock we dont know if this bundle will be renewed. I ask ok so why is it still being advertised please rate your agents service. Call again sorry cant help call sales. They say call customer care. They say ok call sales. Eventually I am told to call the stores. The stores say we cant assist. I then call customer care and again customer care says call sales and I call sales to be told we cant help I ask to speak to supervisor to which I am told there is no supervisor in sales. She then says as you know calls are recorded I say yes i know to which she says the only way to speak to a superior write a complaint on Hello Peter. This absolutely pathetic I thought the service was bad before but they are becoming worse by the day.