Untrained staff

i upgraded my cell phone contract with Telkom about 2 months ago. the first month my account was rediculously high (R1800) then this month it was R1050. i had my new phone for 2 months now and my new contract sim with free minutes and data rates is not yet activated. i get billed R349 for an internet add on bundle that i have not requested at all. so now i'm getting charged for my new contract but i still receive my old data bundle, free minutes ect. this is the worst company i have ever delt with in my life.i can't even phone them cause you get put on hold for 30 minutes and longer or you just get cut off.