Woodland — shoes hurting behind ankle

Hello!
I purchased ls 2727117 ladies footwear mfg-oct/2018 (Purchased around 23rd june 2019).
I am dissatisfied with my purchase and in a state of mental agony, since the day i wore them for the first time. I got severe show bites by wearing them and walking just for 10 minutes. That was my exam day and it was raining, i was injured due to shoe bites but still i have to walk because i was in no position to go back and change my shoes. I reached late in the exam hall and had to suffer mental torture because of that and could not write my exam properly. Currently i'm not in the city from where i purchased them and cannot return them.
I want you to look into the problem and provide a solution.