0 stars! I am about to open a case of theft against this security company!

BIG WARNING!!! 0 stars! Do not get into business with this company if you expect good service. I was given a quote on an alarm system, I made deposit, no invoice or proof of my payment. They then bounced me around on a date for installation, said they would be there, I arranged someone to sit at the house on more than one occasion, no show. I then asked for an upgraded alarm system, I paid in more. Was given incorrect amounts that I paid in the first time, told I didn’t pay what I paid. I then get a call saying I need to pay in more on top of what I was told for the upgrade. I still have no invoice or proof of payment received, no date for installation, no copy of contract I signed, so I say I want to cancel and get a refund. OVER TWO MONTHS- no refund. Every-time I call no one answers, I get bounced around from reception to hold and back, no call back, no email, nothing. You have to actually go ahead and open a case against them and refuse to get off the phone with them, to get any response from them about your refund, only to be told that they will pay you next week! I have asked for an email confirmation in writing about this, still no email. Absolutely the worst company I have ever dealt with! Will I get a refund…. Who knows. I have spoken to a lawyer, national consumer commission - Next step a case of theft against a security company, can you even believe that!