Wrong Amount and Debit Date/Bad Customer Service

Dear Cell c i just took up a sim card contract for 10 gigs any time an 10 gigs at night but i was informed that because only part of the amount will be debited this month because the contract started in the middle of the month, firstly i was debited on the wrong date, secondly i was debited the wrong amount which more then what i agreed upon an i was received half of the data that was supposed to be assigned to my sim card, i called 084145 to try to get some clarity but i was placed on hold for so long and the contact center agents kept on hanging up the call after i explained my story they place me on hold n follow up by hanging up all of them were giving me different stories, i spoke to Phumla, Sindiswa dhlamini, Ntombi and Sandra Links that was very rude, i asked to speak to a manager all of them denied me to speak to 1 so that we can try an resolve this, i am unhappy with your service if you guys don't respond within an hour I'm going to escalate this... Kutlwano Mkwa**** ***