Bad or non existent service

What an absolute disappointment. After being a loyal Vodacom customer for more than 10 years. I have a query I need to resolve. I have called on at least five separate occasions, I have sent emails, which I have received reference numbers for, and just complete silence. Quote obviously I am a drop in the ocean an to small of a customer for me to receive a reply. I have even spoken to the query center at the Ceo's office and had no assistance. I think it's time for a change