Awaiting Refund

On the 28th of July 2019, we purchased a MT30 CIOT Kids watch from the Vodacom at Eastgate. After purchasing the watch we experienced problems with it, the battery drained after 3 hours. I took back the watch on the 03 Aug 2019, which was within the 7 day window period and I was assisted by the manager of the store Prof. He sorted out the paperwork, took the watch and said he would get back to me as I wanted a refund. I had not heard from him and visited Vodacom on Friday, 16 Aug 2019 and met with him. He mentioned that he handed the documents to the relevant individual and he would instruct the person to contact me the next day. This did not happen. I find the service unacceptable and this is my second bad encounter with Vodacom. I would appreciated my refund.....the money does not belong to you