Unable to assist with vioicemail

<p>I called vodacom customer service yesterday the 18 th April at 22:43,from cell no *********. My voicemail is not activated, coz callers doesn't reach it, was looking for assistance.instead I was crossed questioned and was told I couldn't authenticate myself and was refused assistance.. I have 3 phones, iPad and speed stick , I dont keep track of when I load airtime , only thing I do if 1 phone doesn't have airtime I moved to the next phone. But I told her I got R29 airtime on Sunday ,and the phone I'm using for the 082 number is a Nokia cheap phone of R100... Unfortunately we no longer keep descriptions of the cheap phone but if it was inserted on my iPhone or other of my smart phones I was going to know the description.. I got irritated coz I'm asked questions I can't give honest answers.but if she asked me which numbers I called last I was going to answer her.. I told her I have the number for more than 10 years ... But she refuse to set my voicemail due to that ... Now I fail to understand of such poor service ... Let's say I couldn't tell which Nokia it was , how is it refusing me assistance from vodacom. I'm a vodacom user yes what does the phone have to do with it</p>