Very helpful and very polite.
Very helpful and very polite.
By laura
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
813 reviews
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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.
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Very helpful and very polite.
By laura
I had called a couple different companies to compare prices and location. The customer service with this company is outstanding. Both times I called they were very friendly and very helpful! This company is not the closest to my location but chose it due to the customer service I received along with the reasonable price!
By Diane
Very pleasant and helpful.
By Marcus
Rep was awesome
By James
Cynthia was very professional and kind
By Kristopher
Tawanda answered all my questions and was fast and efficient in scheduling an appointment for me. She gave me info above and beyond what I would consider to be the minimum requirement and was extremely polite and patient.
By Stuart
I spoke with Tawanda yesterday morning and was more than happy with the service she provided. This is a new experience for me and I had no idea what the process to have this done is. Tawanda guided me through and contacted the provider, following up with an e-mail outlining everything we talked about. Thank you.
By George
Melissa was very friendly and helped me with everything I needed.
By Andrew