VansWomen's Ward Sneaker

I ordered a pair of these in July a split around the edge in same place on each shoe? I can’t find who or where to contact to get them replaced?

Are they genuine

Are these shoes genuine? They are completely different to my vans from JD sports, worried they are counterfeit and I won’t wear them if they are.

I ordered a pair of size 5.5 in September for a Christmas present ive only just gone to wrap them and realised you've sent me a size 8. Can i change t