Charging us twice on one cellphone number!!

At the end of October my wife and I upgraded our cellphone contracts. Both of us were with Vodacom through Autopage and both of us ported our numbers to Vodacom direct. The ports went through and we were now officially contracted. My Iphone had an intermittent signal and I was without a phone for 2 weeks(no temporary handset given for the inconvenience) and ultimately got a new one. From November onwards we received bills on the same cellphone numbers from Autopage and from Vodacom. When I spoke to Autopage they said we were still contacted till January and we must pay. How a number can be ported when the contract has not expired is beyond my understanding and what is even more so, is that we are now paying two cellphone contracts on the same number, at the same cellphone service provider and we only have access to the benefits of one. How is this fair? It cost us R1500 pm for the last 3 months for absolutely nothing and Vocacom and Autopage are both just pulling up their shoulders, sorry there is nothing we can do for you. Can you please refund us the money, or at the very least transfer the airtime, data and sms bundles from the inaccessible account to the accessible one. Thanks