Direct Tv (scam from Dish Network)

My son recieved a call on his cell phone on the last part of June,this year jt showed up on his caller I.D. as Direct TV. The man told him we were getting a upgrade on our services,since we had been a good customer the last 4 yrs. He asked my son for my credit card which I do not have,so he then ask for my S.S.# without thinking he gave it to him, he sat up an appointment,to be here on 7-3-07. When he came I was not home but my son was, The man hooked it up by the time I returned home it was all done. When I saw the van door it said Dish Network,on it. The man had me to sign a paper, which I did without thinking,I then ask if the 2 Companies had merged as 1,he said no. Then said sounded like I was scammed.So when he left I called &cancelled this & told her we were already with a cable co. She said it would be shut off at midnight,which it was not I tried to get hold of someone but did not get this rrsolved until around around the 27th of July with a balance of

$249.00,Payment due this month of $ 196.49. And someone has made a $ 2.00 pmnt. on my account on 7-24-07 with a visa which I do not own. I thought you should know about this scamRIP OFF,ESPECIALLY FOR PEOPLE ON FIXED INCOMES LIKE MYSELF. Thanks, Barbara Pilant