Overcharged Every month for the last 8 months

Has anyone had a problem with being charged for "Adult Content"? My Husband an I are seniors, age 76 and 79. We've received charges of $150.00 plus each and every month since July 2014. We've spoken with customer service every month disputing the charges. Unfortunately, we are being falsely accused of watching porn! We may watch tv in the morning(preaching) for a couple of hours, then the news around 6pm. Ther's no way that either of us are interested in porn! We requested a service call. The repairman came out and didn't find any errors on AT&T's part. After the repairman left, my daughter came by and blocked all movies through parental controls. My husband and I don't want to change the channels because we're afraid of being charged for Adult Content. This is unethical and totally against our morals and values. Any suggestions?