Vodacom 4G SIM Card can't work with 4G network, now it's useless at all

<p>I went overseas last month and switched on SMS roaming before I left. When I came back to SA I switched off SMS roaming. And then I can't use 4G network anymore.</p> <p>I use the same cellphone which means the cellphone is fine. I put another vodacom 4G card in my cellphone, it can work well which means my cellphone is good also.</p> <p>I use it at the same place, which means the coverage is the same. And also another vodacom sim card in the same place can work with 4G.</p> <p> </p> <p>I called 082111 several times, they are patient to explain and did some changes at the background, but none of these ways working.</p> <p>I went to several vodacom shops to seek help. People there say it's technical problems and they can't help.</p> <p>Now no matter how I can't use 4G network with the sim card. I changed the apn several times as well, but none of them working as well.</p> <p>I logged into the website to change the services to expect a miracle, but it always says sorry to have a technical problems.</p> <p> </p> <p>I am very frustrated for the technical support even for so simple problem.</p> <p> </p>