Signed release 38 days ago

We signed a release with Zurich on the first of June 2015. We have been following the payment up for the last two weeks without any success. Two weeks ago we was informed that the payment was on the last stage and only needed to be paid. Last week we was informed that the problem was escalated to Adile the payment manager. We contacted him but was never available. We sent numerous emails to him and on Monday he rep**** that he will investigate the matter. It is now 48 Hours later and still it was confirmed this morning that the payment was not done. We tried to contact Aadil without any success as they indicate that he is not available.It is now 38 Days And Still no Payment even after the release indicates that payment will be done in 30 days!