Ultimate Stationery has the worst customer service ever

I recently made an online purchase, made payment and later the order was canceled, tried to send whatsapp was told they will respond soon and nothing. Emailed the sales team still no respond, went to their Facebook account and nothing. Their services are very bad and no attention when it comes to complaints especially since am in need of the bag for my son and that was my last money spend trying to invest in my child's education I am really disappointed.