Game Store Bad Customer Treatment

Game store is pathetic, their service is just useless to say the least. I ordered a dual sim cellphone online. In December and it was delivered on 4 January 2022. The cellphone did not recognize the second sim and I wrote to them about the issue and iI was told maybe I did not put the sim cards correctly (a real ridiculous explanation). I then said (in Januaey) can I get a refund as this phone is not a dual sim card cellphone I was told can I take it to the nearest Game store which i did and it was confirmed that it is not recognising the second sim. Since them I has this Emily Abraham who was calling me to apologise and the matter has been referred to her managers. After many of such calls I said to her she must not call me or send me email unless she is to tell me that I am getting my refund (i.e. Jan, Feb and March this has been going on). The cellphone was collected in late March and now is the battle of when do I get my refund. So much band treatment from this store which I will never ever use again. To say the least ineptitude of the staff who handled this matter was just amazing and shameful with lots of apologies