Sarcastic on phone

This morning I phoned Jaguar Land Rover South Africa Customer Relations to escalate my complaint about my brand new Land Rover Discovery 4 (2015). I spoke to a lady who referred to herself as Cindy. She was quite sarcastic on the phone and stated that my complaint had already been escalated and then cut me off, by transferring me to the case manager without allowing me to finish what I was saying. I asked to speak to the manager, but was not put through to the manager, instead I was put through to the case manager. I was told the manager is busy on the phone -- I was told this yesterday as well. I was also told yesterday that I would be called by the manager, but to date I have not received a phone call.