ACR PLT CAUGHT BTWN 2 ACFT ON EITHER SIDE CANNOT TURN INBOUND UNTIL AFTER XING THROUGH FINAL APCH COURSE. RECEIVES TCASII RA.

Narrative

ACFT 1 WAS CLRED FOR VISUAL APCH 18R WITH RPTED TFC AS ACFT 2 FLYING VFR; AND ACFT 3 WHO WAS CLRED (AMAZINGLY) TO 18L. THE CTLR AND ALL OTHER ACFT WERE 'COM JAMMING' THE RADIO FREQ AND WE RECEIVED A TCASII RA TO CLB AT 1000 FPM TO AVOID THE ACFT 3. WE SAW ACFT 2; WE DID NOT SEE ACFT 3. WE SHOULD HAVE BEEN TURNING S TO INTERCEPT THE 18R EXTENDED CTRLINE AND AVOID ACFT #3 BUT WE COULD NOT TURN S BECAUSE THE CTLR HAD CLRED THE ACFT #2 TO CROSS OVER AND ABOVE OUR FLT PATH TO INTERCEPT 18L. IN OTHER WORDS; THE RA TO CLB; OUR CLRNC TO TURN S TO RWY 18R AND THE ACFT #2 IN OUR WAY MADE IT SO WE HAD TO CLB STRAIGHT AHEAD (EASTERLY). THIS CAUSED US TO FLY THROUGH BOTH 18R AND 18L CTRLINES BEFORE WE COULD TURN BACK; NOW BEHIND AND PRACTICALLY CO-ALT WITH ACFT #2. MEANWHILE; WE COULD NOT GET A WORD IN ON THE RADIO FREQ TO NOTIFY APCH THAT WE HAD A TCASII RA. WE CLBED AND WE COULDN'T TURN TO FINAL! THEN WE HAD TO QUICKLY GO TO TWR. WE NEVER TOLD THE APCH CTLR AND HE; APPARENTLY; NEVER SAW OUR ALT CLB OR OUR FLT PATH DISCREPANCY.