Terrible Service

We have been calling Vodacom for about 3 weeks trying to do an upgrade....Each consultant ask me to speck to another department. I was asked to email a deal match to ***. I have sent him 2 emails and no response. I then contact the social media team who deals with Facebook queries on the 28th June. They took all the information and sent it to the back office. A gentleman called me at the beginning of last week to say he is handling this matter. He called me at the end of last week and told me that they can match the deal but want to give me a 128 gig instead of a 528 gig phone. I told him to check on this and come back to me. as this is not a deal match but a deal comprise. He has not came back to me. I contacted the social media team ago and they said it will be escalated to management and still no response. I am now told again I have to wait. I have been a loyal client to Vodacom for more than 20 years. Is this how Vodacom treats a loyal client? Is Vodacom too big to help a single client? Does no one in Vodacom reply to clients? Am I expected to wait more than 2 months for an upgrade? Does no staff member follow through with a query? This is unacceptable. Vodacom spends so much on marketing and their staff damage the brand with such poor customer service . Maybe the staff need to be trained in how to interact with customer and ensure the queries get sorted out. I am so tried of all these issues which could have been easily avoided if staff take responsibility of assisting client rather than behaving in this manner.