Vodacom fibre SA

Vodacom fibre I reported last week Wednesday that my fibre is not working properly , network doesn't allow me to do online shopping, doesn't update my emails, can't access some apps, they send the technician this past Thursday after a week but he did what he could do but didn't solve the problem he also did network tracing of which he was helped to do it, yesterday 'friday' I called again but this people seems like they don't care, I told them my airtime going to finish she said she will call me back but never, I'm at point of cancelling my contact but they say I will have to pay the rest of the months and I'm on 12 months contract started in January