Anyone use RingCentral? FYI: Twilio integration just does not work, at all

Anyone use RingCentral? FYI: Twilio integration just does not work, at all

Wondering if anyone successfully uses the RingCentral integration. By "successfully" I mean:

-Inbound and outbound calls are actually logged in the CRM
-Click to call works
-Incoming calls pop up relevant contact/account informatoin

FYI: do not attempt to use the Twilio integration. 30% of incoming calls, or more, do not have an "Answer" button, meaning our reps simply can't answer the phone. Zoho is, as always, terrible at getting this fixed. 20 emails later, and it still does not work. We have been told multiple times "ok it is fixed!" with no change in functionality. I am dumbfounded; I have used Salesforce at other companies, and if a problem of this magnitude were ever found, Salesforce developers would be on it ASAP and likely send out a systemwide email about the problem. Zoho won't even debug this themselves, let alone try to fix it. Today, outbound calls are not being logged whatsoever. Very very close to moving to Salesforce or another CRM.