Huawei Menlyn Bad Customer Service

I am unhappy with the service I received from Huawei in Menlyn mall on the 2nd of September 2021. I bought a smart watch on the 23rd of August 2021 and the consultant who helped me on the that day told me that the watch i bought will work perfectly with the Iphone, when i got home the following day i realised that some of the functions i could not use them then i went to the store on the 2nd of September , i was told that it is not their problem and that i should have returned the watch within 7 days of which it was not disclosed to me when i bought it and not even the receipt has terms and conditions on the back of it. i am disappointed because i was not helped and i even gave them an option of exchange the watch with a phone instead. they refused and now i am stuck with a watch i cannot benefit all the features.