Vodacoms poor customer care

I have two Vodacom contracts. I upgraded my cell phone in October 2018, but Vodacom upgraded my data line (ipad) instead. And subsequently my cell phone too! So for almost 6 months ive been paying for a second contract that im not using. Ive been trying to cancel the data line contract for the entire time. They “migrated” the data line to the original contract it was on, BUT I HAD TO PAY FOR THAT TOO. Their mistake but i have to pay. The vodacom store has been making promises to sort it out, still nothing. They dont respond to emails, the manager not taking my calls. And i cant cancel the data line, cause “its not time yet”. Last month my bill was more than R5700, this month already more than R4300. For something im NOT USING. Vodacom is the worst, they have no customer care whatsoever. Like I say, its been going on for 6 months now!! And I just have to keep paying!!!!