Tired of false promises

Well as per my previous two complaint when i upgraded online the wrong sim was delivered with my phone firstly I was phoned last week Saturday the 5th and promised delivery of my new sim by Wednesday the 9th still nothing arrived so I complained again on Wednesday I was then contacted and said the parcel was sent via the post office and then I was contacted again on Friday the 11th and then promised delivery by courier today the 14th it has now been 11 days since I received my phone and vodacom can't rectify there mistake. I am tired of empty promises from vodacom. How much longer must I wait. They are very quick to disconnect your service if you don't pay your account or even short pay it by R1 but when it comes to there part of the agreement that does not get met they simply don't care. I am so sick and tired of having to beg vodacom to send me a sim. I simply do not know what to do anymore I just want to be able to use my phone. I have been a loyal customer to vodacom on the same contract since 1999 and this is the service I received. I am very disappointed.