Bad service

If i could give 0 stars i would! I signed up on the 2nd November ever since the internet connection has been almost non existent. I have made calls and was promised it would be sorted out. Up until today the internet is still extremely slow. I basically paid for a service that i am not receiving. When i called in to cancel the lady advised that a technician will sort out the problem(he only sent an email to advise on what to do) the exact same things that i have already tried. I might as well pay an extra R20 for a much better service from MTN.