Their customer service is unparalleled! They are constantly answering questions for our team as well as offering guidance when needed (which I appreciate!).
We've been using them since 2015 with great success - we have not had any issues or complaints over that time period at all!! Highly recommend their product/service if you're looking into PPC management in general but especially Ad Quadrants' platform specifically. Nothing really comes up too often where they could do better than others out there so it's hard to comment negatively about anything specific here; however, overall everything has worked very smoothly thus far which makes me feel like this was an excellent decision of ours from start-to-finish.