Vodacom . Try cancel your account?

I would like to complain about Vodacom pathetic ******* service, i originally phoned to cancel my account and daughters account and was ******* by Mr M elephant, who told me that because i was such a good customer over 20 years, i could get a big discount, which i did not realize was a new contract at the time, now that I'm going overseas, i can't get a settlement amount as they say i owe them 2 years, i tried to explain this is totally wrong and conned into this new contract and that this was never mentioned, but cannot come right i have spoken to Nicolene, Liza, Nivashni, Angela who cant help, or suddenly the lines are cut? This is a trick VODACOM IS USING as not so long ago you could cancel at the office, now they have made it so you can't cancel, bunch of ******* artist that they have become. It took my son 3 months and several calls to cancel his account.

I wonder if there is a person in Vodacom with enough guts to look into my problem, cancel my account or turn me into a ******** as i am emigrating so goodbuy.....i have my doubts?