Wonderful customer service!
Very polite and helpful representatives!
By Tanya
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
813 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Guardian Interlock provides ignition interlock systems (also known as "blow and go" or "car breathalzyer" for people who need or want them after a DUI/DWI arrest. We provide high quality services and devices to make the process of installing and using an interlock as easy as possible.
Guardian Interlock (guardianinterlock.com) has 813 customer reviews on The Fair Hearing, with an average rating of 4.0 out of 5.
Showing 541 reviews with 5 stars · Clear filters
Very polite and helpful representatives!
By Tanya
Melissa was VERY helpful, knowledgeable, courteous. She is excellent at customer service!
By Ronni
Tamara did a great job with helping and info
By Brad
I worked with melissa to get my appointment scheduled and the way she went above and beyond to get me the day and times i needed and keep it as affordable as possible
By Diana
Mellisa was very helpful and kind when I didn't know the first thing to do she helped guide me through it all with ease
By Christopher
A lady by the name of Melissa Adas was very nice and very knowledgeable as well as helpful. Excellent customer service... I was very satisfied at how easy she made everything for me. Thanks.
By Rolando R.
Great customer service! She compared prices and scheduled the installation at the location neatest to me without me having to do anything! Thank you very much!!
By Meagan
Great really helpful. Got a call in mind after putting my info in online. Tawana was great answered all my questions . No complaints.
By Nicholas