No communication

Purchased cellphone March 2022. Cellphone could not be activated, internal battery swollen. Took the cellphone in to Ackermans Canal Walk November 2022. I had to every 2 weeks call the store and go into the store for feedback. In the meantime I had to make myself short and buy another cellphone as I need to be contactable for work. 2nd week in January 2023 I we t in again to Ackermans Canal Walk and spoke to supervisor and store manager requesting to get a credit for.the cellphone as they confirmed the selling of the battery is a norm. Still no feedback from the technicians. Store manager promissed to have it resolved within 1 week. No contact no feedback. Can someone please help me. I do not want a replacement cellphone that will give me same problem again.