What a joke - contract increases after 5 months

I have started an internet bundle contract with Vodacom in November last year. This is my fist contract with Vodacom (I went to Vodacom because I got an internet modem for fee from a friend).<br> <br> Now five months into my 24 months contract I receive a mail from Vodacom to inform me of price increase on my contract...what? I am with MTN for 11 years now and never in that 11 years of having contracts with them have I received a price increase in the middle (or in this case not even 6 months) of a contract. <br> <br> When I signed the contract no one told me this is how Vodacom does business. You were too happy to take my money, but not have the decency to tell me of all the terms and conditions. (And be honest it is not like the Vodacom assistance give you time to read the contract, it is just sign here and sign there.....).<br> <br> Not happy and will not renew my contract with you.