Unacceptable faulty cell phone device sold at Pep Cell N1 City branch and pathetic customer service by Staff &

I bought a new mobicell at Pep Cell December 2019, In April 2020 the start up button no longer worked, this is 4 months after spending R450 on a new phone for a child of mine. I returned the phone to Pep Cell at N1 City where the service I received from the staff including the so called supervisor was a bad experience. I was asked to bring in the original box as well which the child has thrown away but I had my receipt with me. I was then told that I need to buy a box to put the phone in as they will not accept the phone as it is. I then asked if I could put the phone in one of my cell phone boxes they agreed I could also buy a box at the shop to put the cell phone in, I went home and returned the following day with my cell phone box, I bought a koki to delete all the information on the box. This phone was handed in on 10.05.20, I was distinctly told it will take between 2 to 3 weeks and the phone will be collected on the 11th May from the store at N1 City, I went to query on 21.05.20 if they perhaps received the phone yet. Only to be then told that it takes up to 6 weeks to be repaired and the phone has not yet been collected from Pep Cell N1 City. I do understand that we are in lockdown and that stuff like this is delayed due to unforseen circumstances but surely with level 4 that opened cell phone shops & repairs took place on the 1st May this phone could have been collected by now, the phone has been lying there for 10 days and the staff could not be bothered to phone and find out what is causing the delay in collecting the phone. I am trying to understand how a brand new phone can last only 4 months is this poor workmansship, I have definitely learned my lessen and will never again buy anything from Pep Cell due to the service I received and the way in which the whole transaction was handled is very poor service. I would like a competent person to call me from Pep Cell or Mobicell and give me feedback on the progress of repairs, I will also advise friends and family and whoever wants to listen about the disgusting after sales service I received from Pep Cell.