My site is caching on vodacom 3g

[debonair]

I would like to know how to stop vodacom 3g from caching the contents of my site, I set the headers and not to cache and I still get the same problem. It works fine on adsl and browsing from other networks, mtn and cell c, so I am certain the problem is with the vodacom proxy please help!

[SYNERGY]

Set the header to request a new copy everytime

[debonair]

Set the header to request a new copy everytime

How do I do this with PHP whats the header? this is what I have

  
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past

[sajunky]

Your headers are ignored by transparent proxy. HTTPS is an option.

[debonair]

Your headers are ignored by transparent proxy. HTTPS is an option.

Thats the solution I am going with, thanks