Pathetic Customer Service: Vodacom After Sales

I have upgraded my cell phone contract in the beginning of January 2022. I received an iPhone 13 Mini with my upgrade. From the moment I have started using my phone it gave me problems. I informed Vodacom the next day. They logged my complaint and arranged for a collection of the phone by the courier service they make use of. The courier came and collected the iPhone from me after more than 14 days (which they said is the time frame) on 26 January 2022. The courier confirmed that the phone was delivered back to Vodacom on 27 January 2022. Vodacom could not receive / reverse the upgrade till today. I have made numerous requests, begged, pleaded, even lost my temper since 27 January 2022 but still... no feedback, no phone!!!! Worst service from ANY service provider EVER! When I mentioned that I would like to cancel my contract with Vodacom the only response was: "That is ok - the number is *** and I should select option 2. In other words as a loyal customer, who followed up, queried, phoned again there is just no customer relations or satisfaction WHATSOEVER!!! I am currently still waiting for a so-called "superior / teamleader" to contact me to sort this out - but I have lost all hope!!!!! Vodacom is the WORST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!