Unhappy client

I am disappointed at the way a consultant by Thelma who supposed to assist me regarding to check about delivery that was supposed to be made today as Thursday the 17th December, the lady had an attitude and put me in hold like forever and it's a third party delivery. When I called again am told my mom is supposed to call and they cant call her, that puzzles me because all the time they have been calling her to get verification. And now I wanna change the delivery address to my work address hence I will be going to work but no one is able to assist.

Am very unhappy with the service I got and am paying for the account but it's under my mother's name. Kindly assist with this matter