Refusing to deliver

Account holder went into Vodacom at the beginning of October 2017 to do a transfer of account, we completed all the necessary documents and gave it to Vodacom, they said everything is fine.... They still sent the invoice to the previous account holder. So we went in to Vodacom (2nd time now) to ask whats going on. They said everything is fine (even gave a printout of their system SHOWING everything is fine!) On the 1st of Nov the new account holder's account wasnt billed as they said and promised twice it would be. So we went in (3rd time now) to pay the account manually... Two days later the phone was suspended... So we went in (4th time now) to ask what is going on, they said sorry and activated it.... one day later PHONE SUSPENDED AGAIN! We would like an apology letter from Vodacom's accounts team (not half hearted!), compensation for running around to make sure they are doing their job and still not seeing result. And we want this issue sorted out as soon as possible, in the meantime we will not use Vodacom again... how can a company as big as Vodacom have so many employees and still we (customers) have to run around to make sure they deliver their service!? Number is 071 -- 410 -- 6597