G36 under warranty needs to be exchanged for different model

I work from home and rely heavily on my ability to access the internet reliably.  I recently switched from my rental Modem/Receiver from Spectrum to your G36 and maintaining a wifi connection has been spotty at best.  Since I am under warranty I need to return this device in exchange for another model with similar capabilities.  I’ve gone through all the community posts here for input and it seems that Arris SURFboard support will do just about anything, including ignore posts, to avoid a return or exchange.  The Live Chat and even the Support Phone number are either down or hidden.   Says a lot about the product and the company behind it.  I hope that this will not be the case here.  I look forward to hearing from support as soon as possible.