Unblacklisting phone taking forever. Ridiculous

I called Vodacom on the 27/03/2018 to blacklist one of my phones. The lady I spoke to decided to blacklist a wrong phone without confirming any of the details she requested(IMEI and Model) . I was the told to fill a form and provide necessary documentation which I did. I then called again today to ask to be transferred to the blacklisting department and they guy rudely said there is no department like that and then hang up on me. I called again and the guy assisting me confirmed that he can see the history of my issue but then the Debbie from blacklisting department closed that issue. Yet i still have a blacklisted phone and no communication has been sent to me . This is disappointing service from Vodacom and a huge inconvenience as I am missing important calls.