Unhelpful and arrogant

I waited almost 30 min a que and being pregnant that is not fun to stand that long only to be told that the items I wanted to return as the are the wrong size and the right size was not available, because I did not have a receipt (as gift) even though all the tags were still on the items and can clearly see they were purchased in a Jet store. I was not able to do. The staff member was willing to give a gift card however when the manager came over it became a massive issue and her attitude and and body language was shocking and now I am left with items that don't fit and I can't exhange, I have never had this problem before and I left the store annoyed and feeling I wasted over 30 minutes and for what. ....