GSI Cool Sealed Waterproof Adjustable Armband Bag With Necklace Strap
I ordered three \\"GSI Cool Sealed Waterproof Adjustable Armband Bag With Necklace Strap\\" and I received:<br /><br />* ONE corrected \\"GSI Cool Sealed Waterproof Adjustable Armband Bag With Necklace Strap\\": HAPPY - That is what I ordered.<br /><br />* TWO substituted bags by seller (NOT \\"GSI Cool Sealed Waterproof Adjustable Armband Bag With Necklace Strap\\"), not easy to seal & bad sound. Is it OK for a seller to substitute the merchandise without asking the buyer?