Rude and bad customer service

Below is the email iv sent to Vodacom on the 14th of June 2024: "I would like to lay a complaint about an agent from Elite cell that called me with regard to my upgrade. The call was at 16:31 from ***. When I said I wasn't interested to upgrade he called me stupid because I wasn't even prepare to listen to him and hear what he wanted to tell me what his call was about. I'm really disappointed if that is how vodacom treat us as their customers. No one has the right to force me to upgrade." I didn't receive any response from vodacom. On the 1st of July I made a follow up with vodacom customer service and I was connected to Elite mobile to state my case. The agent from Elite mobile promised to come back to me after tracing my call with their upgrades department till today nothing from both Vodacom and Elite mobile. I'm really disappointed that vodacom is sharing our information with their subcontractors that could hardly take responsibility for their actions.