What are the name and phone of the customer with the most ordered product quantity?
return customers ;return products #1 ordered ;return number of  #2 for each  #1 ;return #1 where #3 is  highest ;return name of  #4 ;return phone of  #4 ;return #5 ,  #6
['select', 'project', 'group', 'superlative', 'project', 'project', 'union']