Worse service ever!!!!

My Wonga account gets debited on 27th of November .on 15 December I got an email saying I am in arrears because they debited my account early.in December.. I sent an email back saying I only gets payed 19 December as stated in an earlier email that I rep**** in. On 18 December at 07h04 gets again a sms saying i am in arrears. I called Wonga contact nr non stop from 8h00 but no agent picking up. At 12h18 received sms that I have been handed over to Nimble??? HOW IN THE HELL IS THAT IN ARREARS IF U HAVENT GIVEN CONsENT FOR AN EARLIER DATE THAN PAY DAY AND HAS NEVER SKIPPED A PAYMENT.??.The automated machine said emails is stocked up/backlog of 48hrs but its 72hrs already and no reply but handing me over to debt collecters!!!!!!!.Really messed up.