Terrible service VODACOM

Good morning. I have been struggling to get any joy from Vodacom since October 2017. I was ******* into taking a Wi-Fi device, and charged for it after I specifically enquired about any additional charges to my existing contract. An investigation was done, with Vodacom listening to the recording of the incident, and feedback was given that I was in fact put under the wrong impression from the start. Vodacom would have collected the device from me and reimbursed the money they have deducted. Up to date, I am still stuck with the device, I never even activated, and are still getting charged for it monthly. I have sent numerous emails, with replies and calls received from Vodacom, promises made of the matter getting resolved but nothing happened. I am still paying every month for a device I didn't want or consent to being charged for.Up to date Vodacom owes me almost R1,000 with no response anymore from my last enquiry sent 12 February 2018. Is Vodacom so desperate that they will keep taking money ********ly from a customer and just ignore emails to get a matter resolved? I have cancelled my current contract with Vodacom in my last email, even though I didn't receive a reply, and will send all debit orders back from now on. I want my money back. One of the biggest cellphone providers in South Africa is in my opinion *****ing from me and just too lazy to bother fixing their mistake