MiWay sharing private information to other companies

We have joined MiWay Insurance last week. Since then my phone does not stop ringing with people trying to sell me insurances, trackers, life cover. Tracker even states that because Im with MiWay, I HAVE to install a tracker in the car. It is part of the terms and conditions. I need an insurance company. All my information I give to MiWay should be confidential and not be used as marketing and sales information. Please stop sharing private customers information.