I TOO WAS WARNED NOT TO USE ZAMMATARO PLUMBING. UNFORTUNATELY I IGNORED THE WARNING AND USED THEM TO FIX A TOILET BACK UP. THEY CHARGED ME OVER $1,600.00 TO FIX THE PROBLEM. IN LESS THAN A YEAR THE AREA WHERE THEY HAD BEEN WORKING SPRUNG A LEAK AND THEY REFUSED TO COME OUT AND FIX THE PROBLEM.