Absolutelty shocking service

I went into one of you outlets because my contract phone that I have stopped working. It gave a sim card error. They checked and said that the sim card is very old +- 6 years and has stopped working. I would need to do a sim swap. They then proceeded to tell me that they only have one person who could do this for me but that they were not in for the day. I then went back the next day and this person was available. She then told me that they did not stock the sim card and would have to order it. How can you not keep sim cards in stock absolutely useless. It has now been 5 days and still no sim card has arrived. Unfortunately they are the only Vodacom outlet in our town so I cant go anywhere else unless I drive 260km to the next closest Vodacom outlet. I have had to buy a pay as you go sim card in the meantime and am losing business and work because nobody can get hold of me on my number as it is not working. I feel this is shocking service. I have 3 contracts with Vodacom and they are all due for upgrade later this year. Well with this kind of service I will definitely be changing!!!