One week after paying my final phone bill, I realized I overpayed by almost $100. I notified the telephone company and requested a refund. They stated it would be up to 90 days before they could refund the over payment. When questioned about the time it takes, they replied they were allowed by law to hold any funds due to cover outstanding bills from long distance carriers. Even after the final bill from our long distance carrier was paid, the local phone company continued to refuse refund of the over payment for an additional 60 days. They finally refunded the amount owed. Do I have legal grounds to pursue interest charges for the 60 days they refused to refund the over payment? I also have the transcript from the complaint I filed with the Better Business Bureau.