Double billing

I recently received my new phone contract via courier with Vodacom. Thus meaning my contract was only “activated” On the 7th of June and my contract was taken out on 1 June. So technically my contract bill should be the amount disclosed in my email which is under a thousand rand per month. I then logged into my vodacom account via the app, and it said my bill is over one thousand rand and all my features are doubled. There is a double line rental and a double contract cover. I tried phoning and got now answer. I wanted to send a private email, but the “email us” option is unavailable as per your website. Please assist. New customer and I am not satisfied with the services.