Bad service from Vodacom and Cellucity Melrose Arch

I stay in Zim and I sent money to my brother to buy a Nokia T20 tablet from Cellucity Melrose Arch so that I can use it for my studies. He ordered it on 15 February 2022 under order number #17911 and it was delivered on 16/02/202. However due to logistics, I only received it in Zim on 22/02/2022. The package was still sealed and I was the first one to unbox it. The screen didn't come on but I heard the famous Nokia tune. I packed it up and sent it back the next day. It arrived in SA on 24/02/2022 and my brother returned it to the shop. Because it was after the 7 days from purchase, the out of box warrantee had lapsed. On 25/02/2022 It was booked in for repair at VODACOM REPAIRS FOURWAYS MALL2 with Job No. ***2. The repair was supposed to take 2-3 working days. My brother only got a text message on 2 March 2022 that the device had been repaired. When he went to collect, he was told that the device had actually not been seen by the technician. So they told him that they would contact him when it was done. On 03/03/2022, he received another text message stating "Your device with Job No. ***9 has been sent to the Vodacom Advanced Repair Centre for a higher level repair".

On 7 March 2022, he received the following message "Hi :) Good news. Your device at Vodacom Repairs with Job No. ***9 has been completed. Your ID/drivers licence is required upon collection. To track https://cutt.ly/vl0KGEX. Please do not reply to this message." When he went to collect, they told him the device was still not ready. My brother expressed his dissatisfaction to the staff at Cellucity Melrose Arch but was eventually told that a swap or refund was not possible. On 19 March another message was received this time with a different job stating "Hi :) Your device with Job No. ***5 has been sent to the Vodacom Advanced Repair Centre for a higher level repair. We will be in touch with you soon."

It's been almost month and the device is still not repaired. This is very bad customer service and I really want to have this issue resolved asap as it affected my ability to conduct online lessons which was the purpose of buying the device.