migrated with my authorisation

i was upgraded without authorizing it. i expressly told the agent no, but she did anyway. took months to migrate me back but despite several employees working on it, i have never been refunded and no one is interested. i am actually considering laying ******** charges against vodacom. the worst most shocking service ever and plain dishonest bad on you vodacom, a customer for 25 years and you could not care !!!