am i in the wrong?

Here is what I suggest you do. Call up your fiance and nicely tell him that, **"Hi, I really loved the gifts that your family has sent. Please convey my thank you and appreciation to your mom for the presents. I don't want you to be mad at me. I didn't want to inconvenience your khala and that's why I suggested to make things more conenient by separating the gifts. That way your khala wouldn't have to go through the trouble of delivering the gifts. I thought it would be easier for her. I had no knowledge of your mom's wishes in this matter. If i had known, I wouldn't have made this request. I hope that we can move past this and not let it hurt our relationship."

*******There might be a possibility that since his mom couldn't personally deliver the gifts to your herself.....she thought that having another **maternal member of the family such as a KHALA give the gifts on her behalf would seem more formal and appropriate.