AO Smith — Faulty Geyser replacement

I have an AO Smith Geyser 15 ltr capacity which I bought in 2020 (Model HSE-VAS-X015). I have opened 20+ complaints for this geyser ever since. THe geyser trips down MCB from time to time when turned on and then it does not turn back on until the next tech visit. The technician has changed the coil/thermostat and performed cleaning of the tank multiple times but the issue does not seem to disappear.

So here I am, asking for a replacement of this model as this is still under warranty. Even the technician says that there is nothing left for him to do now as it is a known problem with this model.