Mervyns Credit Card

According to Mervyns records, there was a charge for $84.31 on Dec 11th 2006. I never received any statement. Their records had a different mailing address, phone number and even a social security number, at the time of purchase. After going through various departments, I decided to pay the amount as a collection agency - GE Money Bank, was harassing me. Now I receive a statement for $163.73, according to the statement those are interest charges.

How can they charge me interest when I did not receive any statement??

It has been going on for almost 11 months. I have been spending so much time on phone calls, that end without any result. I have written letters and have received no replies.

Is there anyone at Mervyns customer service who can handle this and put an end to this situation.