Bad customer service as well as not for filling the customers rights within it's time of guarantee

I bought a hard drive on 31 December 2016. It was a 1tera byte seafarers hard drive . I experienced problems with the hard drive about 2 months ago and call customer services I was told to bring it in for an assessment. On the 19 October 2017 , after 3 to 4 weeks I did not get any feedback from Game and I decided to call them. The consultant told me that the hard drive was not repairable and that I should collect the hard drive and it will not be replaced. I then spoke to the manager (Mr Anothony aka Monty) and he told me that the supplier told him that USB port is damaged and does not fall as part of the guarantee and that i damaged the port. My concern is that the hard drive is within its 1 year guarantee and therefore should be replaced by the store as that is my understanding. I have been using hard drives for years and have not damaged or abused the hard drive like I was told.