Spamming behaviour

Received 14 missed calls in 5 hours, and several just seconds apart. 1. If a customer doesn't answer, maybe they are driving or in a meeting? The immediate repeat call doesn't make sense. 2. If I were interested in choosing one of the quotes they provided, I would have accepted it through their website. That's why it's an online service, isn't it? How can I remove my contact info from your database, please? Thank you.