Contract cancellation

I called in to cancel the contract in march was told it couldnt be done as i was in arrears i had to pay the money before to cancel the contract in which i did and told rhe consultant that I lost the phone and no longer use it. Money paid, called in to cancel the contract was told my sim was blocked due to arrears but was told ill be contacted after the block has been removed. I called 5 days after for the cancellation which i was informed the sim was blocked ill be contacted. Lock down. To my suprise i got statement to say i am owing, called in again spoke to Mzwandile from accounts who told me the will investigate and listen to calls as I called initially to cancel the contract which was never done, i have calling vodom for the past days and i have been put from pillar to post and I feel that i have been violated as customer, feel abused as I only wanted to cancel the contract.