Impossible to contact.

I moved overseas a year ago and have been trying to cancel my month-to-month contract since. It is impossible to cancel my contract through any channel BUT phone. I have send COUNTLESS emails. Tried COUNTLESS times to call with a wait time that will cost more than it is worth to keep the contract for a year. How hard can it be to respond to my emails? Obviously impossible. They had the cheek to send me a collection email today. Which I will ignore as they have ignored my cancellation emails. I would rather put the money towards a lawyer than Vodacom get another cent for a contract that's not being used. SHAME ON YOU.