Faulty battery- bad service

A few months ago i purchased a new battery for my samsung s4. Recently i noticed the battery started swelling. I did not keep the packaging or slip as i thought i am buying the battery from a reputable store(Vodacom Cape Gate) and expected a quality product. <br> <br> I am very dissapointed in the product i have received from Vodacom. I went to the N1 city branch and was told by a sales person the battery can be changed without a slip as long as i go to the branch i bought it because they will be able to find the product on the system and do an exchange. I drive all the way to the Cape Gate store to be told that i need a slip and sorry that is a big loss for you sir.<br> <br> This is terrible service from Vodacom to give me a run around and i am unhappy with the poor quality battery, this is not what i paid for and expect an exchange and to be treated fairly as a customer .