Jet Airways — Gold member / missing miles

I am contacting Jet Airways since April 2015. Have sent them dozens of emails and called them dozen of times. Each time I call or send an email you get the same standard response, we will investigate it and give you an update within 3 working days. After waiting for weeks when you contact them again they say again the same and that they cant help at the moment but will investigate Next time Jet Airwairs should consider playing a recorded message, at least I would not have wasted my time repeating all the time the same issues to different customer service agents. I have become a gold member since March this year, but never received my card or vouchers. After calling and mailing them for 3-4 months they said the gold card was delivered by DHL. I have never received anything from DHL (why would I otherwise bother spending hours on attemepts to contact Jet Privilege!). The DHL number they gave was not valid, as I have contacted DHL to inquire more info about this shipment to verify delivery. In 5 months the vouchers will be expired, so will be worthless. Becoming a gold member in Jet Privilege means you are degraded and get some trash service. Also my miles and tier miles of beginning this year were not added for 3 flights. Although the booking was a return flight with one stop, so in total 4 flights, they only credited points for one flight. All were booked with Etihad as one return booking with my Jetprivilege number (how else would they have added 1 of the 4 flights) I was told it could take 2 months that the miles showed up.. After 6 months still no milesshow up for those 3 flights of the same booking. They always promise they respond within 72 hours, nonetheless it seems 72 hours means 72 days for this company. Stay away from Jet Airways. I flied with them for several years but since this incident I avoid them and book my flights only from airlines. I would consider again using Jet Airways in the future if they offer at least some basic service and solve this issue and send me my gold card, vouchers and add missing miles, and this within 10 days. After that I give up and JEt Aiways will be never used by me anymore and also scrapped from the list of allowed airlines in my company.