Sells defective laptops and refuse to fix, refund or replace them

They sold me a defective laptop in September 2025. I requested for a refund and return within 10days as per their policy but they refused to refund me and forced me to place a warranty claim. I have since returned the laptop 3 times for different issues, the last one being that it doesn’t switch on at all and charger was not even included in the delivery. I keep trying to phone to find out what is going on but the consultants are rude and unhelpful. I keep requesting to speak to the manager and they tell me he doesn’t want to talk to any customers. I ordered the laptop for business but have never even used it for more than 5days since September. Very *********** and unprofessional business. Yet they refuse to refund or even give me a different device.