Poor customer service

I would like to complain for the service I’m receiving. It’s been 3 weeks since I’ve been to Game in Cape Gate and I requested that they search for a receipt and let me know what’s happening. I haven’t heard anything back from them, I bought a laptop in this year and I lost my receipt. I asked them if they could help me and they said yes and took my details. Every time I call the call centre they just put me through to the store but it’s a nil.