no help at all

I called the call centre to inform them that my internet is slow, they said its my device(they gave me) but changed the device yet still slow.<br> I called them again to inform them, they said its my area and told them I work in Sandton and still doesn't work.<br> then they tell me I must change my network settings from 3G to 2G ***? why have a smart phone to have old age network.<br> <br> this was few months back and they still cant help.....useless