WORST SERVICE EVER!!!

Please can you give me a direct email address to your head office / complaints department??! I have been without internet for at least 2 weeks. I work from home which means I have had to buy network data! I demand a refund for my January fees. I HAVE NEVER EXPERIENCED SUCH BAD SERVICE! You are costing me money! I would also like to cancel with IMMEDIATE effect, as MTN can give me much better service! My number is ***.