In 2024, we trusted Granko Inc. to fix our unstable Comcast wifi issues and bring their…read more"professional expertise" to our network. This is a sad story of the betrayal of that trust, their underhanded ways and the hero who ultimately saved the day!
With their matching Tshirts and cringey bravado, Granko descended upon our property promising a new era in internet stability; "you'll never have to call Comcast again... just us!" Oh boy... you know the type. We hoped they'd do right by us so we whipped off a positive review when they finished. PRO TIP: Never, for any reason, write a good review in the first 24-48 hours.
Within a few days, the system reverted to its old tricks--dropping Sonos amps, latency issues and random WiFi shut downs. But worse...where we once had WiFi throughout our property, we now had nothing outside our homes. What? We had just paid for extenders to boost the signal and exorbitant labor fees only to make things dramatically worse.
What then ensued were a flurry of emails from July - Dec, more equipment and labor charges. Granko claimed the wiring was compromised, sonos amps weren't hardwired, Sonos did software updates, faulty splitters, etc... all those fixes were implemented but surprise, surprise! Everything was exponentially worse.
In 2025, medical issues sidelined us and frankly, we didn't want to deal with Granko. It was annoying, they never re-examined network wide solutions and consistently threw more equipment at any issue. Sensing a pattern here, folks?
In July, 2026, we foolishly decided to call them as issues still plagued the system.Their answer? More equipment and labor. And, once again, no change.
At this time, quite randomly, we found out that we were missing some equipment. We then went through the digital site map with Granko. In 2024, we had paid for 4 ULTRA 60W network switches but they were nowhere on the map. Just last month, we had paid for 2 U7s, only one appeared on the map.
Granko admitted they swapped out 3 of the ULTRA 60W for a cheaper product but never told us. And they had no idea where the 4th switch was. They blamed the missing U7 on the old "miscommunication between techs".
I picked up the owed U7. Granko's wife gave me a taped up box which had been previously opened with the accessory packaging opened. Classy!
Thankfully we had been interviewing technicians and Diego Cid of Sonoma Tech Solutions came for a consultation! Within 40 minutes, he assessed the situation.
Diego spent 2 days in 90 degree heat, modernizing and optimizing our network. He reinstalled routers and switches, corrected the network topology establishing a single gateway and end-to-end network, put Sonos under the same network and adjusted for multiroom operation. He also found that Granko never installed the U7s and other boosters properly... they had them too low, their reach was totally neutered by obstructions! Diego also cleaned up all the wiring in our boxes. See pic below. The caption function isn't working... the messy cabinet is what Granko left us. The beautiful, neat and accessible cabinet is Diego's)
Within moments, after he finished, our system started performing beautifully. We had WiFi around the property, the internet speed was faster and our Sonos amps were working beautifully. It's been a few weeks now without an issue... since our problems were daily, the change was obvious!!!
So this begs these questions...
--Does Granko install for obsolescence? Do they intentionally build a system that will routinely fail so they can add more equipment/labor, creating an endless money stream? Did they see us, 70+ senior women, as marks?
--Does Granko know what they're doing? Pretty incompetent not to know how to install U7s and boosters. Worse, Sonoma Tech Solutions took minutes to understand the network topography was completely unworkable. Intentional (see point above) or perhaps they have no idea what they are doing??
Regardless of who you hire, do a full review of what they promised and all the prepaid equipment to accomplish that.
If you are interested in getting the work done professionally and right the first time, contact Diego Cid at Sonoma Tech Solutions (707) 237-4894.
