ATL APCH CTLR OVERLOADED WITH TFC AND TALKING TOO FAST; CONCERNS FLC ON APCH TO RWY 26R.

Narrative

WHILE ON APCH INTO ATL; WE WERE BLOCKED AT LEAST 5 TIMES FROM RECEIVING OUR CLRNC FROM THE FINAL CTLR. THE CTLR WAS EXTREMELY BUSY AND IN MY OPINION; WAS HANDLING TOO MANY ACFT AND WAS OVERLOADED FOR A FINAL CTLR. HE WAS SO BUSY AND IMPATIENT THAT HE WOULD BLOCK THE ACFT READING BACK THEIR CLRNCS; THUS REBLOCKING HIS NEWLY ISSUED CLRNCS. I WAS TOLD TO MAINTAIN 5000 FT AND LOOK FOR ACR Y. I SAW THE ACFT AND INFORMED THE CTLR. HE RESPONDED SO FAST THAT THE CLRNC WASN'T CLR TO ME. I DIDN'T EVEN HAVE A CHANCE TO RESPOND TO THE CTLR BECAUSE HE WAS OFF DOING SOMETHING ELSE. SINCE I WASN'T ABOUT TO FLY THROUGH THE LOC FOR RWY 26R; WE INTERCEPTED THE LOC FOR RWY 26R SO AS NOT TO CREATE A CONFLICT TO TFC INBOUND TO ATL ON THE S SIDE. I ASKED 3 OR 4 MORE TIMES TO MAKE SURE I WAS CLRED FOR THE VISUAL AND THE CTLR WAS BLOCKED EACH TIME. BUT I DID HEAR MY CALL SIGN AND I DID HEAR APCH IN THE READBACK. I ASSUMED WE WERE CLRED FOR THE VISUAL FOR RWY 27R. WE WERE ABOUT 2 MI FROM AJAAY INTXN AT 5000 FT. GIVEN THAT LOCATION; WE SHOULD BE AROUND 2800 FT TO BE ON THE GS. WE DSNDED TO AROUND 4800 FT WHEN I NOTICED A PLANE ON TCASII DSNDING TO OUR R. CONFUSED AS TO WHAT WAS GOING ON; I TOLD THE FO TO CLB BACK UP TO 5000 FT. I CALLED THE CTLR FOR THE FIFTH OR SO TIME IF WE WERE CLRED AND HE RESPONDED WITH ANNOYANCE; 'ACFT X; CLRED FOR THE VISUAL APCH TO RWY 26R.' WE DSNDED AND LANDED WITHOUT INCIDENT. IN RETROSPECT; I SHOULDN'T HAVE DSNDED AT ALL -- REGARDLESS OF THE PRESSURE FROM THE CTLR; UNLESS I AM ABSOLUTELY SURE OF MY CLRNC. ALTHOUGH I PUT SOME BLAME ON MYSELF; I FEEL THAT THE CTLR SHOULD HAVE DONE SOMETHING LIKE; 'EVERYBODY BE QUIET; I NEED TO TALK TO ACFT X.' ALMOST EVERY PLT ON THAT FREQ WAS CONFUSED BECAUSE THE CTLR WAS BLOCKING HIS OWN CLRNCS BECAUSE OF HIS IMPATIENCE.