Disgusting Service

Highly frustrated with Game Gateway, I have given my dad laptop to game gateway on the 3/05/19 and to date have not recieved it. It is way over 21 days I called them on 30/05/19 and they said to me the guarantee fell away as the repair place said water damage although no water has ever fallen on it. They said they recieved a quote. I am still waiting for quote. It's is almost 3 months what if they had dropped water on it now that they have it for so long. I went in on Saturday 15/6/19 and was told by service manager Sanele that I must give him till Tuesday 18/6/19 and he will definatley call me. I did not receive any call or mail or anything. We need the laptop urgently as that is a source of income . My dad passed away on the 24/6/2019 and did not receive it back. I called on the 26/6/2019 only to hear the same story they will call. Pls help me to let me know what I can do from here. . Still no call. I called again and spoke to Sanele and he said he will check and get back to me still nothing I had to call back next day and now he says he spoke to the senior manager and cannot give me a refund or new one. I am so highly frustrated with them I don't understand how they can have a 31 day policy and it's almost 3 months and no follow up done. He said he will call the supplier now and check. This is not on. Pls assist me. Thank you in advance.

LG