Vodacom chartz krugersdorp staff are arrogant and don't care about their customers

Vodacom chats connect management and staff and krugersdorp have no customer service s****s what so ever, I took a contract on the 31january 2018 for a Lenovo idea pad, I found out the camera was faulty they second day on the 1st of February 2018 I went to the store they didn't take it or book it in, the camera had a flickering problem you can't take videos.... I went back home with the box mind you I was still under guarantee,I went back on the 5th February 2018 telling them that the camera problem is persisting the technician there told me there's nothing they can do I should either buy an external camera or call Lenovo for help... I was so shocked at how I was treated and that they can't do anything for me whilst I took out a contract with them... I went back home again with a faulty laptop, on the 8 I went and ask them to cancel my contract I was told I can't cancel cause I've already used the laptop.. I told them to cancel it I'll pay for what I used the manager bluntly says we don't cancel... I've never felt so in prisoned in my life.. They then asked to book the PC that was on the 8 and told me that it should be back after 3/5 days.. It's been on repairs since the 8th till now I don't have a PC on me I keep getting dates and promises that I should expect it soon... The manager there is arrogant and doesn't listen to clients complaints... So I'm angry and I want my contract cancelled I'm done with Vodacom.