unrealliable and bad service

On the 31/12/2014 I booked my phone (job number:***7)for repairs at vodacom repairs centre in cresta mall and was told it will take about 3weeks for the phone to be fixed. After a month, on the 6/02/2015 I went to enquire about the progress of the phone and was told that the phone is at head office and it has s quote of R900. My problem and dissatisfaction about whole thing is that nobody bothed to inform me about it. The worse part is that the number***) that was given to me was not working and when I asked about it was told that they are having a problem with the number, what's funny 6 months ago I booked the same phone had the same problem with the number. The question is how long Will it take for them to fixed their phone numbers? And why give clients a number that is not working? Vodacom is a big company and didn't excpect this unprofessional manner. I told them that they should just send the phone back because chances are they will keep it for the next 12 month! Im really disappointed with them!