I have bought an inverter, trying to contact the store plenty of times

I have bought an inverter, trying to contact the store plenty of times. I used direct contact details , ones I found in the internet no luck. The on the internet transfer me to another company, while one on my purchase invoice they are not going through at all. I am really angry 😡. To other don’t buy things from Pakistan 🇵🇰 / people from other continents they can go at anytime , warranty means nothing if you can find the store.