The most *********** and useless provider I’ve ever encountered

I app**** for a laptop contract online in the beginning of November. The contract was approved the same day and I received my package on the 11th. When I wanted to set it up the charger didn’t work so I went to one of the mtn agencies in Bloemfontein and was advised to bring the whole parcel in so that they can send it back and I can get a new one. I took it back the next day and a return was logged. About a week later I got an sms informing me that my device has been repaired and will be sent back to the store. Mtn decided that because I opened the box they won’t be accepting it and sent the defective device back to the store in Bloemfontein. The agent at the store then advised me that he spoke to someone at the warehouse and explained that the device was faulty out of the box so it needed to be replaced. The laptop was then sent back to the warehouse. On 23/11 I received another sms telling me that my device has been repaired and will be sent back to the store. The agent at the store gave me a reference number and a contact number that I need to call on Monday to get feedback on the device. I phoned that number today and was told that the device has been sent back to the store as it was rejected at the warehouse because the box was opened. My question is HOW THE HELL WAS I SUPPOSED TO KNOW THE CHARGER IS DEFECTIVE IF I DIDNT OPEN THE BOX. The best is Mtn have debited my account with the prorata amount and I haven’t even had a days worth of use of the laptop or the data I’m supposed to get with the contract. Mtn is completely useless and offer the worst customer and after sale service I have ever encountered. I don’t understand why it’s taking more than a month for you people to exchange a flippen laptop that was defective out of your warehouse. I was also informed today that I need to go collect the laptop from the store so that the warehouse can arrange a collection from myself to send it back to the warehouse and then the contract will be cancelled however I have made it abundantly clear that I DO NOT wish to cancel the contract I merely want A REPLACEMENT that works so that I can get use of the thing I am paying for.