Unresolved complaint

Good day, Vumatel have not responded to my initial review. I called them again on Wednesday and Friday without any success. I even sent them a review on their page on the 06 June still no response. On Wednesday I spoke to consultant known as Vuyo and he put through to a lady,who I forgot to ask her name. She confirmed that I qualify for a free-month after checking on my profile. She then said she will put me through to billing to enquire why they debited my account. I held the phone for more than 25 minutes without going through. On Friday I called again but asked to be put through to new business (ie sales). My call was answered in less than 10 minutes. I then asked to be put through to billing department. I held for more than 30 minutes until my call was dropped. I'm appealing to you to assist me to cancel this contract because I'm not getting any joy from them