Broken Adidas

I bought a pair of Adidas shoes at Edgar's towards the early part of 2017. Thinking that it's a name brand I was unfortunately not satisfied. I have been purchasing sneakers for years at Edgar's and never found the necessity to keep the slip. Unfortunately my shoe broke as I was busy working and bought some glue to fix it temporarily. I then went to Edgar's in Kenilworth Centre cape Town. Where a young lady by the name of Gillian assisted me and said that because the sneaker was bought in excess of the six month return policy she could only offer me half the value of the shoe. I declined the offer as it was not worth while unless I bring the receipt which I have searched for but unsuccessfully could not find. I would like to know what further steps could be taken? Do I continue to pursue the incident with Edgar's or do take it up straight with Adidas. I am still wearing name branded shoes that I purchased at Edgar's for more than tree years and as I said that this was the first mishap. Please contact me on ********** 752. I need to know the way forward if purchasing any name branded items at any Edgar's store will be to my detriment or not. Thanks in advance. Dustin. What do I do with the shoes thats broken. Do I pay up my account and close it or must it be taken up directly with Adidas.