Dissatisfiing. Unbelievable. Disgusting. Bad customer service

My mother bought a phone Huawei Y9 prime 2019 on the 20/05/2020 at vodashop vereening in riversqaure. The phone is insured from vodacom. When my mother got home she charged the phone till 100% and she downloaded 3or 4 apps.. Than suddenly the phone said battery low 1% than switched off.. She than charged the phone again it was full 100% than time to use the phone same problem happened battery low and it switched off.. Mom called into vodacom to report the fault she was told to bring back the phone which she did on the 21/05/2020 they advised they cannot refund her back the money she bought the phone with which is R5699. She than left the phone with vodacom to be checked and on the 29/05/202 mom was told to fetch the phone.. The phone was charged 100% upon opening it and we downloaded 3 apps.. Whatsapp and 2 banking apps after a few minutes the phone than said battery low 1% and switched off.. This is really frustrating. Bad customer service and disgusting dissatisfiing from vodacom as my mother bought this phone with her money and trusted this brand but she is not getting the value for money.. We have tried calling into the shop and they don't answer the phone she was assisted by Hlaro and another lady. We are demanding my mother gets her money back since she was not assisted and not given an option to choose another phone to the value of the money spent. This is very bad.. Serial number #***