Unfair payment deduction

I am very dissapointed in webafricai moved houses and i contact them that i moved they checked and said that the address and details that i give them is not mine but it was the address i used when i lived there i dont have wifi at the moment for a month now and now they deducted R429 for wifi i did not use i just want my money back because when i asked them to move my unit to where i stay now they said its not my account how do you deduct out of my account now after they said thats nor my wifi