Horrible experience

On the 25th of January 2020 I bought a Y5lite from pep cell in strand street Cape town and on the 4th of February I took the phone back as it had just switched off on Sunday, they told me that they would take it back for repairs and that process will take 5/6 weeks I went back on the 7th week and my phone was still not back, and so again after the lockdown my phone is still not back and was told that they still need to work on it, so my question is am I supposed to wait another 5/6 weeks again for a phone that I only used for 10 days. I am very upset and am going to get the Ombudsman involved as the lockdown was not supposed to affect me in an way. So its either I get a new phone or my money back