Unsuitable Huawei phone from Vodacom Springs Mall

Purchased a wrist watch on 2 yr contract on the 7th December 2023 but already back to the shop in Springs Mall x3..Not happy I called the Customer Care on the 17th Dec and spoke to Tina who even checked date of purchase and kept me on hold for few minutes whilst enquiring about Cooling Off period..She later advised me to take it back to the shop because 14 days had not lapsed..Went to Springs Mall on the 18th and Jody Snyders, Xolani and Neo insisted the cooling off period doesn't work in their shop. Strange because was advised by their Customer Care Centre(082135) who even gave me a number to call (***). I have a serious heart problem and the watch would help with monitoring my heart but ONLY told on the 19th that it works at a certain distance and with bluetooth on.If I knew this was the case I would have never purchased the watch because my problem happens at any odd time and specialist even suggest i might need an Open Heart Surgery.. The watch doesn't ring all the time when I receive calls. They refused to take it back or even exchange with an iPhone watch. Neo and Xolani are aware I have an iPhone but my concern is why they allowed me to take a Huawei watch and link it to my iPhone and NOT advise me to purchase an iPhone watch. I'm a pensioner and now will b faced with a 2 year contract of a watch I do not like or will NEVER serve the purpose, hence I am sending this to get your assistance