MTN Online Upgrade

I upgraded my phone contract via MTN store call center on the 05 May 2020. They told me it takes 3 to 5 working days for delivery. I called frequently to follow up and receive my tracking number each time They gave me a phony tracking number. I asked how long does it take and all of a sudden their story changed now it takes 5 to 10 working days. It is day 10 today still no phone and no tracking number.