Afrihost Upgrade

I dont even want to give them even 1 start. they upgarded me from 25 MB to 50 MB with out my concern and I came to know about it after 6 months . when I asked them why did you upgrade me to a faster line with out my concern they said " well we send you an email if you didn't want to have an upgrade you should have notified us " Then i asked don't you need a conformation from your customer to upgrade him or rather increase the debit order , They said no we send you an email then we upgrade ?? How ridiculous is that . they send me numerous emails every day with their promotions . they want me to go through all of their emails and check when are they going to upgrade me to a line which I don't want and notify them saying please i don't want that upgrade ....... These people find brilliant ways to loot their customers .

Is there any possibility that i can approach consumer court for this ??