Comcast Comcast is not customer support , Internet

We signed up for comcast internet about 2 years ago, then I needed to upgrade my internet, upon calling they stated a price, I took their Support ID, and discussed with my wife, upon calling back in less than 10 minutes, I was told there was no such deal and I would have to sign up for tv in order to get a discount that was good for a year.  I took their information as well.  Upon going to get my receiver, I attempted to confirm the price to be told that it was going to be $30 more.  I discussed the pricing error with the lady and provided the support representatives information.  She stated she would get this fixed and provide the pricing I was promised for a year.  Six months later, my bill went up $30.  I called and they told me that no, that I was not on a discounted rate for a year, but they would fix it so that it just went up $5/6 months until it reach the normal price.  after a year, my bill went up $20 dollars, at that time I asked what if I cancelled my cable, they said it would actually stay the same price.  I confirmed, I am not in any contract, they stated, no you are not.  

I recently signed up for home security through them and no have to move.  They do not offer services where I am going to move, so I discussed with family to see if they could assume the alarm, my family was ok, with it, however, every time I call to find out cost and process for transferring, I get told to call someone else.  I told them of this about the 4th call.  Then I get told by their representative, that they are getting the same response I am so they will call me back in about 30 minutes, after about 24 hours, I called again speaking to another individual, they stated that they would call me back in about an hour.  She also stated that somehow I am now in a contract that started back in May 2011, I explained that we never signed a contract and I wasn't in a contract in April 2012, so how am I in one now that started almost a year before that.  It has now been over 5 hours and no call yet.