I have a clogged outbound sewage pipe below my kitchen sink. Or rather - some distance away from below my kitchen sink. I have a kind of a plumbing auger, but - its head is a bit wide (maybe 1.5-2cm diameter), and it has no mechanism for spiraling, like a crank or a drill attachment etc.; and the sewage pipe takes one 90-degree angle and then hits a T-junction outside the building wall. I manage to "snake in" my auger about as far as the T-junction (I think), but no further - try as I might.
I tried unclogging using a chemical agent, but that has had almost no effect.
How would you deal with this situation?