bad connection

Hi<br> <br> I Buy at least 20 gigs of data every month on cell c but when connecting from home there are night i cant even go on facebook as it takes forever.. but when connecting from my friends house in alberton i have no problem doesnt matter what time i connect. i feel that this is unfair as it seems like Cell C only looks after certain areas apparently. if this is the case then i will take my business somewhere else.<br> <br> Regards