Safe Security Will not cancel contract after numerous requests to do so San Ramon California

We did not start out with Safe Security, we were orignially with anoter company that we were happy with and then apparently Safe Security bought them out.  We got a phone call, never a paper contract saying the company had bought out and we were never told that our contract would automatically renew at the time we our equipment installed from the other company, which was in July, and we have been stuck paying this company ever since.  Their equipment isn't even in our home anymore and their station doesn't even monitor our home!  

I have been told that a phone call isn't good enough to cancel the contract and so I have sent in a series of letters asking them to cancel the contract.  First they say the have received them and then they say there is no record of them; it is the same issue with my phone calls.  This company has to be run by people who have no idea what they are doing!

I will try again to send letters of cancellation each month, starting with this month of March 2018 and continue until June of 2018 since I have been told they need 30 days from the renewal date of our contract to "cancel" it.  I've heard this same song and dance four times before and still nothing has happened.  Why it has to be 30 days before the contract I do not know.  After all, if I send in a letter 90, 120, 180 days before the contract that should be good enough, right? 

If anyone wants to do a class action suit against this company, I would be more than happy to join.  I think I will contact my States Attorney General next about this matter because I'm sure I'm not the only one in the State of Virginia to be upset with this company.