talk to a supervisor

Changed my tv plan and internet speed ONLY but somehow they dropped my landline.  We've had that number for 30 years and they released it.  Said they were able to recover it but there is still no dial tone so we can't dial out or receive calls. And somehow they removed half of the recordings that were on the DVR.  Most of the chats/calls included attempts to upsell me to their mobile line and a new phone.  I repeatedly said not interested.  Wish they would focus on the problem at hand instead of upselling.  I have spent 10+ hours since last Saturday between phone calls and chats.  They say it's fixed and they follow up with a text.  Text rec'd was 'is the issue resolved', replied 'no' only to get a message 'we couldn't reach you by phone' DUH!  How can I get this problem escalated without having to explain it for the umpteenth time and spend more hours on the phone with agents who apparently can't resolve the issue?  Thank you for any help you can provide.