Incorrect Phone

I purchased a Samsung Gear S2 watch last week as a present for a family member only to discover that it was incompatible with every phone we had available. I purchased a brand new Samsung Galaxy J1 2016 (SM-J120F) phone yesterday from the Vodacom Fourways Mall branch, based on the limited information I was able to obtain on the Internet that indicated that it would be compatible with the watch. While making the cash purchase I informed the salesman of the reason for the purchase and was given no indication that I was purchasing the incorrect phone. On arriving home I discovered that the phone I had purchased was also not compatible with the watch. I contacted the manager of the Fourways Mall branch and explained the situation to him and asked him if I could return the phone and purchase a different device that would be compatible with the watch. He informed me that he could not help me because the return policy did not cover this type of return and I would be instead required to buy yet another phone. Poorly trained staff and poor customer service have made this a very expensive exercise.