Trudon not recording payments and double billing

Since October 2015, Trudon has not recorded my regular payments, and has started double and treble billing me. I have repeatedly tried to get hold of someone at customer care for the last two weeks, but am always fobbed off and there is simply nobody to speak to who can help, let alone set this right. I have spoken to Sharona, Joan (who told me not to stress!), Collette and Neil, who promise that someone will come back to me, but nothing happens. I am fed up. If this is not set right soon, no doubt Trudon will send me to some or other credit bureaux as a bad payer, which is totally not the case. Can somebody at Trudon please help me and set all this right? Kind regards, Mrs Marilyn Welch of Perfect Strangers Dating Services cc, account number at Trudon is ***2.