Help me buy a new pair of ski boots

Hi!
My name is Ludwig Andersson and i am just a regular guy who is in their early 20's.

I just bought a pair of ski boots for cross country skis which took me 1.5 years to save up to and the first run i ever did with them they broke apart in the front where the connection is (as you can see in the picture) and the store i bought them in don't wanna do a refund or change out the pair.

So it would mean alot to me if somebody could help me!! :(