Zero service or the support that I was promised when I purchased my phone.

I puchased a second hand phone from Unboxxed January 2025. The battery only charged to 80%, called them to report, and was advised that I can return the phone for repairs, or bring it in for repairs and wait while they fix it - which was my preference as I don't have a back-up phone. On a recent trip to Joburg I reached out to find out where I must take the phone, with zero response from anyone. Phone numbers provided remained unanswered, as well as numerous emails. The previous whatsapp service number I corresponded on was also not functional anymore. It's now a month later and still no response to any of my emails. How disappointing.