I do not know how many have had issues with 3DR/ udrones customer service. I am quite disappointed with their customer service response:
1. I do not see any customer service number to call/ enquire. I am surprised!!
2. Not completely informative and I have to wait days before getting information on an order/ any issues with an order before even placing it.
3. The udrones website is not completely informative, with broken links, lack of information on money payment methods on checkout (udrones).
Also, I wanted to avail coupon code as I am ordering for an institution project, but they do not provide coupon code for udrones (which is again, part of 3DR linkage, if I understand correctly). They earlier said they would, but later said the information was incorrect from their side. I am ordering Quad-D frame assembled arducopter which is not available directly on 3DR. The International FedEx shipping charges at udrones is 136$, more than twice at 3DR and this can't be combined with products bought at 3DR simultaneously!
I completely respect APM and have my contributions via forums too where ever I can, but having ordered a product, must go hand in hand with an informative website and an available customer service when you need them.
Hope this really improves!