Defenders Security Company did not check to see if I had a landline; wrong contact Internet

I answered an advertisement stating, "exclusive limited time offer:Now only $29.99/mo. for an ADT-Monitored Home Security System. The offer was as follows: free activation, sensors and gift card. (act now to get this reduced rate and bonuses a $850.00 value.) The ad also mentioned  free home security system installation only $99.00, 15 free pre-wired door or window sensors ($1000.00) ($645.00); wireless keychain remote with panic button $129.00) (never received)(false advertising)  The expiration date: 12/20/17: Keisha ID#13998 stated that I refused the card.  First, I heard of it. 10/5/17. 

1/21/18 @ 1:50 pm: I added up the total and it came to 1,624.00.  It is not free.

I was about ready to change telephone conpany's and was asked not to.  They said that they would use the existing one.

Was told that I needed a down payment of One Hundred and One dollars and ninety-five cents ($101.95) for the work done today.  My son went down cellar and told me that it looked like nothing was done. I asked them to hold the check until the first. When I checked my bank statement and noticed that One Thousand  Seven Hundred Ninety-Four dollars and Fifty-Eight ($1794.58) was taken out. (I was told that it was for the equ ipment which was to be paid in three monthly installments) Defenders, Ic. took the whole thing out at once whic caused several accounts to bounce. This is my pension and social security widow's benefit checks for the month. I went to the bank and stopped it.

9/28/17:  I contacted the office at 1-800-300-4207. I was told that I signed the wrong contract.  I was also told that a service representative would call me to redo my paperwork.  (never happened) (shoddy paperwork)  While he was doing the paperwork, I warned him that I had two other home security systems and one of which I reported to the Better Business Bureau. If he messed up ADT will be reported, too.  (I have sent a report to the BBB in Indianaoplis, IN.) At the same time, he stated that I had 90 days to cancel this account.  My son was present at the time. 

12/20/17: Spoke to Keisha ID 13998 and she said I did not have a landline (I have lived in this house for thirty years and I do have a landline) I asked why my monthly bill was $68.89 when the advertisement stated $27.99, which was a $40.00 difference. When I told her to cancel my contract, she said that I needed 75% for a cancellation fee of $1,000,  Would not put me on a budget. Needed a debit/credit card only what was the onkly way they would take payment.  I also mentioned I has not received the agreement.  (I have received it.)

Keisha had placed me on hold (30 minutes). When she came back on line I kept hearing Keisha saying, "Mrs. B' are you there? 3x's. I kept replying, 'yes'. The I heard a recording saying, "the person is no longer on the line. This call is ended". I immediately called right back, and she stated that she called me back a couple of times and no one answered.