Used airtime

<p>I bought airtime on the 12th of December, I kept the airtime as i didnt need it. I tried loading it on Wednesday and the message I got was it was used already. I then called the contact center they told me that the store where I bought the airtime, sold me used airtime I must go back there. I went back and they telling me I must contact Vodacom. I dont like being tossed around please sort this out</p>