How can I refuse a gift from a man I don’t like?

Personal advice, since you don’t want to have any contact with him

1. Don’t meet him

2. Don’t communicate

3. Don’t Accept any of his items, no matter where he puts them, and don't take them. If he sends a text message, just reply "Thank you, but we are not familiar enough to accept your gifts. If you can, please take yours back." If you don’t get the gift back, then I won’t accept it.” If it is given to your classmate, let your classmate get her share.