Vodacom

I received a notification today to arrange for payment on my Account, and my line can be unlocked, i called and made the arrangement to pay and i was informed by the supervisor that assisted me that i will also receive 20% discount an e mail will be sent and my line unlocked, i never received the emails neither was my line unlocked as promised ! I explained why my account was in arrears, as a result of a family member passed away and we had to split funeral cost between 2 of us, why was i mislead telling me my line will be opened ? Also the sms i received stated this ! Please can you assist me ?