UNSUCCESSFUL - credit profile update

I am trying to update my credit profile as I have disputes. I did email Transunion (used the internet cafe) and I did receive a response stating they do not accept disputes via EMAILS any longer and we must call their number. I cannot afford to contact them as I have a pre paid line and i do not understand why they cannot assist in the email manner! this is truly frustrating especially when i have retailers on my profile that should have been removed 2 years ago!!!!!! can a competent Transunion agent please contact me so that i can update my profile please?