Bad customer service

Very bad customer service. I have 2 lines with them ons a 2 year plan and decided to upgrade my personal line to a faster speed. Few days after that i received a message saying i will be charged R1600.00 cancelation fee. I phoned them immediately and asked them what thv cancellation fee is for and that i upgraded i didnt cancel,the gentleman insured me that its just a system generated message and my bill at the end of the month will show the correct outstanding amount, logged in this morning to pay and what do you know, the cancelation fee is added to my bill, i have spend about 2 hours trying to get ahold of support and no answers at all. I will be looking for a new service provider