Fed up with Vodacom Businesses department

What a horrible experience with Vodacom's business department. Wanted to port from Cell C to Vodacom, thinking Vodacom would give much better service. We have received the new Phone and New Simcard, but it has now been almost 2 weeks of calling numerous times a day and emailing everyday and then being promised the number will be ported before end of business day. Just to start the process again the next day with the same promises. Literally every person we speak to tells us it is not their responsibility, but they will get the person responsible to call us and make sure it has been done, then the next person they said must do it says it is not their responsibility, but they will put us through to the person who os responsible. And that is how it goes on and on. We are now fed up and really do not know where to go from here.