Roaming charges when in SA

Vodacom charged me roaming charges on my data package when the sim never left SA. Since 07 March i lodge several complaints to get it resolved, but apart from attitude and arrogance from Michael van Wyk i got no feedback or resolve. My phone has been soft locked several times with endless calls to the Vodacom Call centre. i am saddled with a bill of R16500.00 and no joy from Vodacom in any way shape or form. Vodacom just keep ending the dispute on the system without resolving it. so i have opened the same case on 20 March and 26 march, but still no feedback. i have been a loyal Vodacom customer for more than 15 years, but i will not renew my Red VIP contract, especially with the new ******* rate increase that is in breach of my signed contract.