why must one hustle so much??

I took a cell phone contract with jabba connect in October 2014 then towards the end of October I called them to cancel the contract.then they send in a driver to come and collect the cell phone from me,then they told me that I have to pay 500 for cancellation fee that they deducted from my bank acc.then the deductions kept on goin on for a few more months.then this year in march they deducted twice from my account.and I called in the first time they told me that financial dep is still busy resolving the matter.then I called them again and I was tranfered to Shawn who told me that he is gonna send the querry to luthando who will then close the account and refund me the extra money they took from my account I even gave them my new account details because I had to close that one due to the deductions and he told me its gonna take 72 hours well it passed and its been a week now and I'm still getting calls saying that my account is over due!!this makes me angry cos its giving me a bad credit record that I dnt even deserve.and by the way this is not the first time I write a complaint on hellopetter they just send me an email sain they will contact me but no m still waiting!!!!