AT&T review: AT&T phone/digital phone

I recently received a promotional letter from AT&T to switch from existing traditional landline phone to digital phone that would allow me to keep my same phone number and my same phone(cordless). This sounding ideal to me since I had been experiencing on & off static/background noise on my existing phone. I'd had techs come out to service it & it'd work for awhile but revert back to all the noise. As of late, it had gotten so bad that anyone who I called or called me couldn't carry on a solid conversation. They would keep asking me to repeat myself. So upon some thought & speak with my daughter, I decided to make the transition and contacted AT&T. They made the changes & told me when the service would be activated. On the day of activation, I had my daughter plug my cordless handset into the back of the AT&T gateway that I had just upgraded to Fiber when they said my existing WiFi w/them was being phased out. I have had Fiber w/AT&T for maybe a yr. or year and a half, now. My daughter told me there was NO DIAL TONE & couldn't make any calls. Needless to say, there was alot of back & forth w/numerous AT&T reps & techs and STILL it didn't work. I even had a rep tell me I needed additional cable & that he'd put in a order to UPS/Fed Ex that would reach me next day and he would contact me to follow up/walk us through the process. He did call but no UPS/Fed Ex shipment came. He explained that it would most likely come the following day. It NEVER came nor did he call back. Each rep told me conflicting reasons as to WHY it was not working. So, I requested they cancel the digital phone service which they honored BUT they also cancelled my landline phone service as well. Leaving me with NO phone service AT ALL. I have a problem with the business practices and the fact that I was literally lied to over & over and expected to pay ridiculous prices for inferior services. What can I do with a digital phone that has NO dial tone & I can't receive/make phone calls?