Vodacom Service

My vodacom contract sim which I've had for well over 2 years had gone missing and I requested a sim swap using the vodacom call center line on Saturday afternoon where I was passed from one agent to another, the last one eventually told me abruptly to go to a store and have it done there, I was still speaking to him when he hung up on me. Today I popped into vodacom at the parkade mall in the Cape Town CBD when a gentleman told me that the sim swap will cost me R160.00, I asked if this could be actioned and the amount be added to my R358 bill at the end of the month, he stated that it cannot be done and that he will only do the sim swap once I've paid him the R160 in cash... Well, as I've mentioned I've been a vodacom client for a number of years and paying a contract which had already reached its peak. However, instead of ending it I continue to pay for it without a hassle each year, to be treated as a walk in customer just looking for quick help... I now have to pay for a sim card with data which I am unable to block or swap over to reuse.