R99 contract too good to be true

<p>I took out a contract with Telkom mobile a few months ago, the contract WAS R99 for 5Gigs of data, but for the past 2 months they deducted R 599 from my account . when i call them they tell me that they have capped it @ R 500.... why???? they sold me a product for R 99 and charge me R500 extra without telling me about it, This is totally and fair, this is day light robery. I expected better from Telkom and i thought they were transparant and there were no hidden costs. jeeerrrrr</p>