vodacom bad service

i am very disappointed and disgusted with the service i got from vodacom. i ordered a contract phone online and it was supposed to have been delivered to my address but it was delayed so i decided to change the delivery address to my work address. I called vodacom sales department to change the address on the 5th of feb and i got a call back on the 7th of feb from a call centre agent to confirm the change of address. Today i called RAM to track my delivery and i was told that they never received change of address from Vodacom so i decided call Vodacom again and they told me they never received a request for a change of address yet i got a call from their sales department to confirm the change. I'm being sent from pillar to post and what is even more annoying is that they don't have reference numbers for their calls like normal contact centres would have so i cant even track who i spoke to. I want to cancel the order and doing that over the phone would be useless.