I cancelled in writing on my bill (red ink) my service from Terminix. I included my check for services rendered to date and stated that as of this point I am cancelling their services. I signed and dated it (3/14/13). Last Friday (6/14/13) they delivered service and billed me. I called to dispute and they said that all cancellations must be verbal, therefore I didn't cancel. Further, they said that a machine is at the billing address so no one could have forwarded the cancellation to the proper people. I was not informed of that or of their "verbal only" procedures. Am I wrong? How should I communicate with them, if I am correct, to make this stop? Thank you!