Wrong Upgrade not corrected! Bad Customer Service

We phoned on the 10th of January 2024 to enquire about the contact upgrade we were interested in and just to make 100% sure the lady send us a quote .After receipt of the quotation on the 11th of January 2024 we phoned to accept the quote and to permit the upgrade. The agent initiated the upgrade. We re-iterated and confirmed 3 x that the contract we want is the Xiaomi Redmi 12 128GB + Xiaomi Mi Stick + Snug car holder on RED 600MB 50min TopUp (24 months) for R279.00 as per the offer on the Vodacom Website. The lady confirmed that this is the correct details and completed the upgrade. On the 16th of January 2024 we received the delivery only to find the upgrade was completed incorrect, and we received only the device and the Snug Car Holder but no Xiaomi Mi Stick. We phoned immediately and requested that this matter be corrected as a matter of urgency as we desperately need the phone but after numerous phone calls and e-mails nobody has been able to assist us and even after we said cancel the upgrade they have said it must first be investigate. We have confirmed that the stick is on hand. We have proof of the quote received and photo's of the offer on the website. Today is the 20th and still no solution. Please advise on this matter.