********** contract with other devices linked

I app**** for a free me contract online on 6 April 2018 .I cancelled the contract the same day because I realized the contract is for mobile and I can not use it in my home.I locked a call and I got a case nr.On 23 May 2018 a Telkom lady phoned me and told me that the contract is cancelled and I can go and get a LTE contract for my home.I did just that.When I checked on the app it showed that the case is resolved.I also saw the there are more numbers linked to my account that does not belong to me.I previously opened call cases for this and Telkom kept on closing the cases or told me not to worry about it because I'm not paying for it.In the mean time I was billed for April and May.In June I received another bill.They billed me for June.I phoned the call centre and spoke to Bafana.He said he needed a sim card number that was not Rica'd to cancell the contract.I never received a sim card because the contract was done online and immediately cancelled.I went to Pick and Pay and got the sim card.I emailed thesim nr it to him.Again the contract was not cancelled.What is very alarming is the other devices linked to my account. I'm now being charged for two contracts and other devices.This is a ***** case and I need Telkom to help me sort it out.