SHOCKING SERVICE FROM VODACOM

I had a Data Contract which expired beginning May 2020. I phoned Cancellations on 20/05.2020. Spoke to SENZO to cancell the contract. I was told the reference number was the the phone I used to call in plus time and date. On the 02/07/2020 I went into a Vodacom store- again, only telephonic cancellation. Spoke to SIMPHIWE with REF. No***. On 23/7/2020 phone Cancellations to check- nothing had been done. Spoke to JOSEPH BILA. He could see all previous calls on computer. On 08/08/2020 Spoke to MASILO- would speak to team leader. On 14/08/2020 phone cancellations- spoke to LUNGUSANI - he would speak to team leader. On 17/08/2020 I get an email in afternoon to say as of 14:22:31 - am now on pre paid and I must use all outstanding Data. I immediately phoned VODACOM - cannot speak to Cancellations- Computer drops call as now pre-paid. Phones Customer Care- spoke to 6 diff. people. SIPHAMANDLA, ANDISO, TEMBA, RASHINI, AYANDA, TSHEPO - gave me ref. no ***- nothing done. Debit Order goes off for higher amount- 08/09/2020 Phoned, spoke to THABEKA FUNANI Ref. No: ***. Why can 12 people NOT GET SOMETHING LIKE A CANCELLATION RIGHT. One cannot talk to a Computer and when you do get a Human- they do not know what to do - nothing can be done on-line. VODACOM SERVICE DISGUSTING AND DISSAPOINTING.