No one can help it's like speaking to brick wall

I have a Samsung s5 and I have tried to contact Vodacom so that they can just give me a letter or something on email confirm when I did my upgrade so that Samsung can repair my screen. I had the same issue 2 years ago. I don't understand why no one at the call agency is able to help me with a simple email that says upgrade on this date with the phone details. my contact ends next year and I won't be renewing it with Vodacom ill rather change to a network provider that is able to assist me .<br> <br> very disappointed in Vodacom. can't even answer my cellphone cause the speak is broken and can't get it repair cause Vodacom can't help me with a letter. If someone could contact me on [Email Removed]