The supervisor that left you the voicemail is absolutely correct. I found out that verizon's equipment at the central office cannot handle the additional traffic caused by the upload speed increases from the promotion.
They didnt have an ETA when I contacted them couple months ago. The traffic causes errrors which requires rebooting of you connection at the co. If you have them do this, the speed will increase again.
Same thing here in central NJ. Wow! Great, all I have to do is "have them" reboot my connection at the CO. That shouldn't take more than 6 or 7 hours on the phone spread out over several days doing the same troubleshooting steps over and over again before I get somebody who even knows what a CO is. BTW I'm already about halfway to that total over the last 4 days.
If you sell me something and tell it's an apple and then deliver a rock, you're stealing from me. I'm calling the cable company. AOL did this same thing back in the 1990's, and eventually, LONG after I had abandoned their connections, a judge took like $200m from them and forced them to upgrade their infrastructure before they sold any more service. I'm sure eventually that'll happen here, because they've obviously over-sold their services and now every time my neighbors start watching netflix I can't connect to work.