Bad, bad, bad service and big ****mers

This company has the worse service ever, I requested online service to do an upgrade on my cell phone contract and I ended up getting ****med, I now have a new Cell phone and I'm liable to pay R250 connection fee, even when I clearly indicated to them, I want upgrade, apparently they take a new contract because they don't get commission on upgrade, worse I called customer line, who made me explain like I'm crazy after back and forth, I was told I will receive feedback in 72hours, 5days later there is no feedback, when I call the urgent says the case has not yet been attended to, I request to speak to shift supervisor, I'm told she can only call me back and I know well they will not call me, unfortunately the debit order is going out with this ****, I feel frustrated and I want to cut ties with them but they are avoiding the entire process, I feel like pulling my hair.