vodacoms online upgrades a ****. added charges!!!!

I called in for a premature upgrade and was told that i could get new device delivered to my door with a few days. Convenient, no charge. The call center agent assured me that the i specifically qualify to have the upgrade done permaturely. This was recorded. My next bill was a surprize as they added further fees for a \3G laptop"which i do not have...i called and queried and to my surprise"