Terrible upgrade department services

On the 29th July 2022 i upgraded base on my need and affordability and receive devices on the 04th August 2022 which was wrong( this indicate that the consultant was just pushing sales) and i called Vodacom for collection of wrong devices still today they haven't collected and they expect me to pay for services that i have never used. This is so annoying as each and every time i am calling for collection i will get different story, first consultant said to me it takes 1 to 3days for collection 3dyas lapses and i called second consultant said to me 7 days to 14 working days also lapses when i called nothing has been registered for collection. Still today they not collected wrong devices.