Overcharge rude staff cutting of calls harassed

I am utterly disgusted with Telkom Mobile right now! Have had so many problems! Upgraded my one phones contract from smartplan 50 to 100 then got a bill of R1300 (usually R700) then they sorted that with crediting my account - now they are harassing me to change the complaint to a compliment eric... calling me and emailing me EVERYDAY leave me alone! now when i upgraded my second phone from smartplan 50 to 100 they promised me the same thing WONT happen. Then i check Novembers invoice... R4800!!!! So i called and people put the phone down on my ear when i ask questions that they dont know! I am STILL waiting over a week for feedback from this case! Then they didn't allocate data and they said I have to wait 5 days! I pay for a service which they are not going to give me and they say they can do nothing about it!? Then i closed my current bank account and informed them of my new details... They said that i must eft them 8 working days before my debit order date as they will only use these details from end of January... this is to avoid being cut off where must i find this money 8 WORKING days before?!!! the only company whom is so pathetic like this! no other company had a problem