PAYING FOR DATA BUT CAN NOT MAKE USE OF THE DATA

I have three devices on my name with Vodacom of which two is wifi routers. I was advised that I can transfer data from my wife devices to my cellphone. Now when I am trying to transfer the data as advised, now they change their story and advise that this can only be done 5 days before the data expire. I am paying for the data and it does not make sense that I can not transfer it between my Vodacom devices. Having to carry my cellphone and a wife device with me is inconvenient and not acceptable. I want this resolve ASAP.