APPALLING SERVICE FROM MTN

I HAVE BEEN WITH MTN FOR SOOOO LONG I HAVE NEVER EXPRIENCED SUCH APPALLING SERVICE .I DID AN UPGRDAE ON THE 11TH OF AUGUST .THE DRIVER CAME TO DELIVER MY DEVICE ON THE 22ND OF AUGUST HIS BIOMETRICS FAILED MY PACKAGE IS STUCK WITH DSV THEY REFUSING TO RELEASE IT NO ONE IS ABLE TO HELP ME AT MTN IM DISGUSTED BY ALL THIS BACK AND FORTH