Vodacom ECLO is not responding to my queries

Vodacom's ECLO has always been very good. They helped in the past with all my queries in a speedy manner. However, lately this has deteriorated. In December, I tried to process an upgrade through them, but they could not deliver. I then cancelled that contract and requested them to transfer my minutes and data. They failed to do so, despite my many requests for updates. It left a bitter taste.<br> This week, my other two contracts came up for upgrade.I again contacted them via email. Absolutely no response. Today I asked them again to give me the information regarding how to cancel my contract. Again no response. What must one do to get service from ECLO? This company had become a disgrace since Alan Knot Craig left...