bad attitude and bad accounts

i phoned into the call centre and spoke to a Thabiso, very arrogant and no help, can't give any help, when asked why they are charging us for itemised billing that we haven't been receiving , i get told he will send it to me now for when do i want it, really that was not what i asked. i then told him again that is not what i asked and he's reply is well they don't know if we get it or not ( but they are the one's sending it). i also asked him why we are still getting charged for services that was cancelled in writing to them- i get told that we must send it in writing- that is what we did and still nothing was done. i have sent an email requesting the itemised billing on the account on 04/06/2015 i am still waiting for it - just getting ignored so what is the use of doing it in writing? NOTHING GETS DONE ANYWAY. They are obviously doing very well and don't need our company account - will remember this when our contract are up. useless service