Pathetic customer service

I have not received a statement since February upon my request to send me past few months statement to see how much is outstanding on my account I was told that my account is with the legal department, i then requested the contact details for the legal department i then got a reply telling me to phone 808 since this is a data contract i can not phone 808 in the first place so i then phoned 083 1 808 from my phone i had to enter the number i was enquiring about the voice prompt then said the number was invalid i then choose the other option and the phone just disconnected i phoned two more times with the same result, after this i then sent the customer service another email it has now been three days and still no reply!