IPTV Provider and bar EPG

Channels can reassign the guide data but I'm finding my provider has such bad EPG data that channels either can't match to it or is just not there. Looking for suggestions on EPG resolutions, thoughts and ideas, what's the best approach?

I would use the pencel next to each channel and map the guide data using Gracenote.
I think the folling solution will assist with your efforts.
https://community.getchannels.com/t/coax-a-simple-iptv-m3u-manager-appliance-for-channels-dvr/47483/35