Disgusted!!!

I cancelled my account with Vodacom a loooooong time ago, I don't even have the email anymore. I have been calls regarding this issue for a loooooong time, and the more I tell them that I cancelled this account the more they are saying it was never cancelled. Very frustrating. They say I owe them R2000 +. It's not the money its the principal behind the matter, I just received a call from a debt collector at 20:42 on a friday evening, Surely this is harassment, Vodacom you are a massive enterprise, But I will be moving with legal action including for legal costs. I am done!!! Stay away from Vodacom, Snakes in the grass!!! P.S: I will never pay a cent to you ever again!!!!