No credit note number for longer than a week

At my wits end with Hisense. Half my appliances in my house are Hisense. Never had a problem before. Bought a 8kg tumble dryer in middle October from Hifi Corporation online. The machine kept on pinching my clothes and damaged a lot of clothing that you have to pull out. The machine rips holes in it and it is full of grease marks. Your technician came out and send his report in same day. It is now taking longer than an week to get a simple credit note number. This will be my last hisense appliance if this is how you treat loyal customers. Penalizing customers for your factory faults. Way to go Hisense. I will get my money from the store and just buy a reputable brand. Clearly Hisense doesn't care about customers anymore. It is all about selling units and that is where the service ends.