Manager at a new role has assigned a senior teammate to help with onboarding, who has been very uncooperative. At some point she simply dropped out of a call, answered yes when I asked if she would return, and never did. For any questions I bring up she gets borderline belligerent and provides the most basic answer possible that is only remotely related to the question for the sake of compliance, without trying to help me.
Incidents like those tell me I should just use other resources, but the manager has set up daily calls with this teammate. What is the least dramatic way to tell him it is the best to cancel those?