RIPOFF AND HAD ENOUGH

<p>I have taken out an contract with them in july 2015 my installment is 199. They have been charging me 259 a month. Last month they send me an sms to say im in arrear for 1800. Phone them for statement to how they got that sum. They send me monthly statements. Now 2 weeks later sms me again tell me they handed me over afor an amount of 3800. HOW DO THEY DO SUMS. No one can tell me how the get to that now when i phone or email they charge me....REALLY. i have proof of all payments!!! What do i have to do? They blacklisted me aswell now. And ive payed every month i have proof!!!!</p>