Telkom ***** from their customers

Telkom LTE A router contract taken out with Bluetechretail on behalf of Telkom Mobile on 25 Apr 15. I reported the unit not working 29 Apr. I called Adliegh Govender back to assist but still nothing. They hold me up for a month after numerous calls, sms's and whatapp messages to come and fetch the unit. I finally get told 25 May they can't collect & that I need to return the unit to a Telkom store. I do this on 3rd June and I am assisted by Prince who looks at all my completed forms and communications and cancels my contract under the CPA with immediate effect. By this time I have already had R1775.27 deducted from my account. He scans all my documents and takes the unit and the sim card and cancels the contract. Come end of June R1399 gets deducted again and then end of July another R1399. This is for a unit that I do not have but someone is using it. I call *** July and then again 3/4/12/19 Aug each time to be giving a different case number that 'DOES NOT EXIST' & then I get told I have a credit of a few rand. End of the day I am still out of pocket by R4500. Today I call & speak to Stella & she says her Manager will call back Zanele Gule. But guess what NOTHING!!