Vodacom : BAD SERVICE

So i was due for a cellphone( ********** 518) upgrade and went in to a vodacom shop to check out the latest deals that i can upgrade to. Was not to happy with what i could get and what i will pay for it! Then i walked over to one of their opponents and almost got double the package for half the price... Phoned Vodacom the next day and told them about this.. and also told them that i am thinking of stopping all 11 contracts with them since 1995 and move it over to the other service provider!..The lady then said, No sir please , i could meet you at the same deal ! .. Great that is wonderful. That was around middle Oct. At middle of November they only came back and said it was approved and received my new phone i think the 30th of November. I presumed that the new contract with new package would kick in the next day as it is the new month. Well it did not! So we phoned to follow up why i still have my old package, and they said it must of been a mistake ,would be sorted out in the next 24hrs.. Well its been almost 2 weeks now and i still don't have my new contract !!! I am so tired of being treted with bad service from Vodacom! Please could someone assist !!