Very Bad service Vodacom

I called Vodacom I think on the 23/07/2022 blacklisting my phone which I lost on the 11/06/2022, firstly I struggle with doing a sim swap now they **** to me and said they did black list the phone but never provided me with an ITC reference number.when I try to call them they have new system , their using Tobi which is He can't assist as I kept on repeating my self several times with now success. I have been trying till now my phone and sim card are being used by some stranger and He keeps on posting pictures like He bought that phone . Vodacom has done it's best to disappoint me I'm left with now words .