Misleading Phone packaging information

I purchased a Nokia 3 in October 2017 at Edgars, I specifically chose that particularly device model because it offered a Dual sim-card option and this was confirmed by the retail agent who assisted me and information labelled on the phone packaging. To my surprise when I wanted to use the phone it had only one sim-card slot option, I lodged a complaint with Edgars and I was told that it was a manufactures error. The problem has not been rectified and I have literally been sent from pillar to post. Within seven months the phone packed and Edgars is not willing to help either, They are demanding a proof of purchase in a form receipt rejecting proof of payment on bank transaction. Kindly help as I desperately need a phone. Should you require any additional information, Please do not hesitate to contact the author on ********** 163 Your urgency in this regards will be greatly appreciated.

Yours faithfully

Charles T Motloung