Impossible to make e-mail contact with Vodacom to resolve a query

This is now the 2nd time that I am resorting to this Platform, my first query remains unresolved. I upgraded and I am receiving accounts way over the amount that has been quoted and agreed upon. Vodacom does NOT respond to any e-mails and the call the I received from Vodacom also could not resolve my query. Vodacom cannot deliver any after sales service, and makes it impossible that make contact with them. Clearly they are also not interested in assisting an resolving queries. Utterly frustrating!