Account debited but no device delivered

i ordered a a Samsung J7 online on the 17.03.2018 and i was debited on the 20th and till today i have received my device, i received an sms with a tracking number on the 25th telling my device is with the Courier but every time i call the Courier Company they tell me they haven't received my device from Telkom, till today the courier company does not have my device, i need to know What was i charged for ? why am i being charged for a device that i don't have? I WANT MY DEVICE by the end of the day tomorrow 04.05.18 if not Telkom must cancel everything and refund me coz i'm already worried that if this the kind of service i'm getting i wonder what more horrible service is coming once i have the device, i want my device tomorrow if not please please cancel everything i will stick to MTN thank you!!!