Bad bad service provider

I have a handset which says no service it has been saying that for the longest time now, I went to vodacom Pavillion to get help however I was told to send an email to blacklisted department as my phone says it’s blacklisted, moving forward still my phone was not sorted then went to vodacom workshop the email along with my documents was sent and received an sms saying my phone is not blacklisted but still my phone says no service, I tried calling customer care but I keep talking to that irritating robot so I’m fuming I can’t seem to get help anywhere and the handset I have was bought at vodacom . Mind you I’ve been a loyal customer for over 15 years now but still I’m receiving such nonsense as a service