LONG TERM COMPLAINT NOT DEALT WITH

I have contacted Autopage on the 26 Jan 2015 with a query on my bill for data. I have been charged an excessive amount and based on past accounts this makes no scence to me. Every customer services personnel whom I dealt with indicated that they will mark my query as urgent and inform the supervisor and a response will be received within 24 to 48 hours. Today is the 24th March 2015, almost two months later and I still have not received a resolution from Autopage. The customer services is extremely disappointing and it is appalling that they cannot answer a simply question 'why am I paying so much?' Autopage are quick to debit my account but cannot provide explanations. I have been patient thus far but now I know that there must be issues on their side as answers cannot be given to me.