Vodacom retentions

I can't believe that I have to complain about vodacom retentions again! Your service is terrible! Why should I sit on the line if I'm not being servised? I spoke to Mthobisi Khuzwayo regarding my contract and I explained that I was promised 20 gig plus R70 airtime for me to keep my account open. I received these for the past 4 months but now someone from vodacom went in on my lines and removed my data and no one want to take accountability. This is unbelievable!