Bad customer service.

I bought a pocket router ZTE 937 on contract, they delivered it on the 17th of February 2023, from that day to date the pocket router is not functioning it cant read the simcard, I spoke to many call center agents, by the name Andiswa, Lebohang, Mxolisi to mention a few but all of them failed to resolve my issue. February and March I paid R285 as per contract agreement but has not used the router until now, when you call the callcentre like i did today the managers are always in meetings so I was told, Andiswa the call center agent dropped the call on me when I demanded that they assist me, Lebohang asked me to get a prepaid cell c simcard so that I could be assisted but to to avail, I am urging South Africans never buy any product from Blue Label their customer car is shocking.