Trainers are good ,training course is good and cou...

Trainers are good ,training course is good and course materials are good. I almost took 2 coursed with simplilearn and both are good.
However i have a very bad experience with the supporting staff are not responding to the concerns I raised.Its been almost 2-3 weeks but they keep on telling we are checking with no one answering the call and no one calling me back.