C# & ASP.NET MVC roles - rolling back deleted roles when passing through context and not commiting

Question

This is the simplified partial pseudo code from the calling method:

using (var context = new ModelContext())
{
    var transaction = context.Database.BeginTransaction();

    try
    {
        // Delete stuff here
        Users.DeleteAllByClient(context, clientToDelete.ClientId);
        
        // And delete stuff here
        transaction.Commit();
    }
    catch (Exception e)
    {
        transaction.Rollback();
        
        return;
    }
}

Take the example method, used to delete user details and their profile.

The ModelContext context is passed through to the method, which means that if the calling method does not commit transaction.Commit(); causing a rollback, this will not occur for the roles. They will have already been deleted.

Is it possible to add the Roles.RemoveUserFromRoles(item.User.UserName, roles); to the rollback?

I can't use TransactionScope (nested or not) as opposed to passing the context through.

public static void DeleteAllByClient(ModelContext context, int clientId)
{
    // Users to delete
    var models = context.UserDetails.Where(o => o.ClientId == clientId).ToList();

    // list of user profiles
    List<UserProfile> userProfileList = new List<UserProfile>();

    foreach (var item in models)
    {
        var userProfile = context.UserProfiles.FirstOrDefault(o => o.UserId == item.UserId);
        var roles = Roles.GetRolesForUser(userProfile.UserName); 

        // these need to roll back if commit doesn't happen
        Roles.RemoveUserFromRoles(item.User.UserName, roles); 

        userProfileList.Add(userProfile);
    }

    if (models.Count > 0)
    {
        context.UserDetails.BulkDelete(models); // db tables specified for clarity
        context.UserProfiles.BulkDelete(userProfileList);
    }
}