BAD CUSTOMER SERVICE

Today I went to incredible connection to buy micro soft 365,thinking that my new pc lacked somethings, so apparently it didn't! So immediately I called the store to inform them about the Microsoft office 365 that I bought which costs 1000 that I did not use or scratched it so can I return it the sore manager in Alberton (where I bought this) told me that it's non refundable and non exchangeable because it's like airtime, when I told him I just bought it and I haven't used or scratched it he told me they can't help me ITS LAW!, so I took the liberty to call their customer service center, firstly the lady was rude, I couldn't get her name and when I asked for her name she asked what do I want, so I proceeded with my problem and I asked her if she could check in her system that the voucher is not redeemed so that I can send it back to the store, because what I need was a router, maybe get the router and something else or refund the balance, she said thay dnt do that, I asked where is the customer service in that, she told me she doesn't know and that I should stop screaming, (I was not screaming I asked her what was the purpose of selling an expensive thing in store if you can't trace it) she sounded bored and egitated, PLEASE PLEASE, INCREDIBLE CONNECTION teach your stuff Erik, E-ENERGETIC, R-RELIABLE, I-INITIATE, K-KNOWLEDGEABLE, PRIDE FOR P-PERSONAL, R-RESPONSIBLE, I-IN, D-DELIVERING, E-EXCELLENCE, because the sales assistant at the Glen mall selling me the pc didn't even mention anything to me, and the one at Alberton didn't even bother to look at my pc when I showed him, IC please provide more training for your stuff