here is simple but to the point a ( Q & A)
Q: Does Amazon or eBay allow the Buyer to call the seller?
A: NO
Q: What happens if customers need more information on an item.
A:They search online
Q: Can they call the seller?
A: Not Allowed
Q:What if a browser bought an item and wants to make a return?
A: USAMALL.SHOP allows buyers to call the seller and ask for return