Business ProfileforGuardian Interlock Systems

I reached out to Guardian Interlock to have their device installed in my vehicle and was qouted a price of $87 over the phone. I agreed and went to my appointment where the device was installed, I then was presented a contract stating I would pay three times that amount ever month. I refused to sign the contract and stated I would like the device removed from my vehicle. The installer told me they could not remove the device without the permission of Guardian and that I would need to call their 1800 number. I have now called the 1800 number and sent emails repeatedly for over three months and have never received a response. I have now received a letter from guardian stating I have an outstanding balance per terms of our agreement (which I never signed) and I am responsible for the cost of the device. The letter has no balance listed or method in which to pay the balance. The only contact listed is the 1800 number that I then again called multiple times and left multiple voicemails. I have never received a response from guardian. I have now received a letter from the DMV stating my license will be revoked due to non payment to Guardian Interlock. I have never received a bill, an email, or phone call regarding any payment and am completely unable to resolve this issue due to the Guardians seemingly fraudulent business practices. I am currently in the process of speaking with attorneys on how best to handle this situation.