Hafele — Low quality / Defective kitchen appliance they provided

Worst product and service provided by them. We brought almost 2-3 lakhs of the appliance from this company thought of quality would be better but they have given manufacturing defects products or low-quality products. One of item among them was a microwave, its glass got broke with normal once-twice usage per week within 8 months and they are not ready to replace or repair, telling us we have mishandled it, we need to pay for it. What logic Sir to not repair/replace the defective products under warranty.