vodacom poor service

I have contacted Vodacom upgardes regarding my upgrade on the 25th May. Today is the 6th July and I an still trying to get my upgrade approved. I call the call centre and leave message for the consultant to return my call and I also email her ....no response.Her team leader has been asked to assist with my query...I have left message and emailed her....no response. Today I called to ask for the team leader manger to come back to me. I was told they cant send him an email...Will only email the people I have been waiting to respond to me. I do understand that the staff are working from home but for no one to respond to me is unacceptable as it is over a month now. Who do I speak to regarding my upgrade as no one responds. This is such poor service and there is no excuse for not responding to a customer.