SMA UNABLE TO COMPLY WITH TAXI INSTRUCTIONS AFTER LNDG.

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I WAS CLRED TO LAND ON RWY 36L AND ASKED TO TAKE THE EARLIEST TXWY TO THE R. A LARGE JET WAS DEPARTING SAME RWY AND I CAME IN A LITTLE HIGH AND FAST. THE CTLR SUGGESTED THAT I LAND A LITTLE LONG TO AVOID POSSIBLE WAKE TURB. TOOK THE FIRST TXWY THAT I COULD TO THE R AND RESPONDED TO THE CTLR'S CLRNC TO TUNE TO GND CTL. I TUNED INTO GND AND THERE WAS CONSTANT TALK. WHILE I WAITED TO GET A CHANCE TO TALK; I TAXIED OFF THE TXWY A FEW FT TO A LARGE ACR RAMP WITH NO TFC AROUND ME. I FINALLY GOT GND AND THEY INSTRUCTED ME TO TAXI TO FBO. I WAS INSTRUCTED TO CHANGE GND FREQ SEVERAL TIMES. THE SECOND GND CTLR THAT I GOT HAD TOLD ME TO STOP AT A RAMP ENTRANCE ON THE TXWY THAT I WAS ON. I WAS IN THE PROCESS OF PASSING THIS POINT AS THE INSTRUCTION WAS GIVEN. THE CTLR TOLD ME TO CONTINUE TO THE FBO RAMP AND I DID. I WAS ASKED TO CONTACT THE SUPVR IN THE CTL TWR BY PHONE WHICH I DID. HE INFORMED ME THAT I HAD NOT OBEYED THE ORDER TO TAXI OFF RWY AT LNDG. I SAID THAT I WAS TOLD TO LAND LONG AND TAKE EARLIEST R TXWY WHICH I DID. NEXT HE SAID THAT I TAXIED ONTO AN ACR RAMP UNAUTH. I TOLD HIM THAT WHEN I WAS TAXIING OFF THE RWY THERE WAS SO MUCH TALK THAT I COULDN'T CUT IN. I WAS BEING FOLLOWED BY HVY JET CARRIERS ALSO TAXIING BEHIND ME SO I CONTINUED TAXIING UP ABOUT 20 FT AND STOPPED ON THE ACR RAMP OUT OF THE WAY OF ANY TFC BY 200-300 YARDS AT LEAST; IN ANY DIRECTION. ONCE I GOT GND CTL; I PROCEEDED TO FBO AS DIRECTED; HOWEVER; THE CTLR DID ASK ME TO STOP AT A TXWY THAT I WAS IN THE PROCESS OF PASSING. I KEPT ASKING FOR DETAILED TAXI INSTRUCTIONS BUT THE CHATTER ON THE FREQ WAS VERY HVY AND I WAS ASKED TO CHANGE FREQ MULTIPLE TIMES ALSO ADDING TO LIMITED TIME GETTING DETAILED INSTRUCTIONS.