Bad customer service /inwilling to resove issues

I have been struggling for 1 month to get this issues resolved by going through Vodacom customer care I have sent the following email to the complaints department of Vodacom on the 28/05/2019 and yet I have not received any feedback on this issue .I have paid monthly and is entitled to my contract benefits that Vodacom just took away without informing me.

The email is as follow Good day

I have upgraded my Vodacom contract in April 2019 that is effective from Mei 2019 I was on usmart topup L and is currently on usmart topup S on my day of upgrade I was informed after I inquired that if I do upgrade to a package with voice minutes I will not forfeit the munite that I currently had on that stage by die person at vodshop in vanderbijlpark.

However the following has happened Before the end of April I realized that I did not have any voice minute on my phone I went to vodashop and logged a request for investigation ,this was still in April the new contract has not started .I had more than 900 minutes on my phone that now was gone without informing me. I logged a call Mei 2019 commenced I received 150minute as per new contract 2 weeks later again it was gone,again I contacted Vodacom customer care per phone then I was firstly advised that my current contract does not have voice minute when I then explained that I did receive minutes at the start of Mei 2019 I then was advised that I have used all the minutes that could be possible.I then wanted to log a call for investigation for the voive minutes of Mei 2019 I was advised then that I should with for the 1st investigation of the minutes of April 2019 to be closed.Days later I received a sms indicating that the 1st investigation has been closed I when to vodashop who advised me that I will have to contact customer care.I contacted customer care that could not assist me and told me that the 1st case needs to be reopened.Then I was informed 1 week later that I have forfette my minutes because of my upgrade.

My problem is as follow I forfetted my minutes in April 2019 when the new contract has not started it was only effective from 1 May 2019 I was adviced by a Vodacom employee that I will not forfette my minute ,I was given wrong information if the correct information was given to me then I would not have done the upgrade.

Please resolve this issue

Vodacom has not responded at all