Bad Service

I purchased a TAB on contract in September 2018 and on the third day of having the device, the screen started showing defects of which I returned to the store for assistance

upon arriving at the Vangate store, I was advised I need to book the phone in along with the sim card as they need to send it in for repairs

It has been 5 months where my card is still being debited and I called in multiple times asking for an update regarding the repair and if I can get access to the sim card to use the data and I have always been told that I need to go to the store

when I do go to the store I get told we will get back to you or they are not able to assisst

I have submitted a cancellation for the contract since I do not have the device