Yoco Khumo machine suddenly “internally damaged” and displaying foreign language in less than 6 months.

Purchased a the Khumo speedpoint last year October . Been using it since then , a few days ago I did the usual switching on and charging and it displayed a language I don’t understand. Switched it back off and didn’t use it. The following day I tried using it and it read “your speedpoint has internal damage please order a new one” how does all this happen within a few hours of using it Efficiently the day before. I’ve tried switching it on again a few weeks later and still the same issue. I can’t het assistance over the phone or chat service because loadshedding and online chat boys don’t go together. I will not waste more money buying a new speedpoint when it’s not my fault that it’s not working