I D Sentinental Alert has been deducting $21.95 per month from my credit cart account for at least 3-1/2 years. That is a minimum of $921.90 that they owe me. I have never signed up for their service and would like for them to show me proof that I did. However, there is no information on my credit card bill to determine how to contact them to have this service stopped (if there is a service) and to get a refund. It is a scam of the lowest honor, probably tied in to the United Benefit Advantage group.