Incorrectly charged and nothing was done!

i was incorrectly charged for equipment that i had in my possession when i upgraded/changed my package, i was told they would come collect the old equipment but nobody came, nobody called and then i get a ridiculous charge and after complaining about it they said they will get someone to collect the equipment again, once again no feedback, no response, its been weeks and nobody collected and the charge is now over a month old and nobody at VOX seems to care enough to sort this out but they sit in their offices comfortably after wrongfully taking my money and they just don't give a damn!