I have been double bill on two separate occassions from this company. First time was when the company changed from Pinnacle to Mantronics Security. I had to verify that my bank release the amount. This I could not believe because they require you to authorize electronic debit, and they charge one month in advance. This recent time was when they changed back to Pinnacle Security and I was charge on the 2nd & the 5th of July 2011. When I contacted the billing department I was informed that I didn't make a June 2011 payment. I fax'd... read full review »