Stop calling ... or else!

Though I've lived in Nashville for nearly five years I still have my cell number from Fort Myers. Now and then, someone from southwest Florida will call me mistakenly ... and they usually hang up and leave no message. 
Well....Mr./Ms. 239-494-3123 will not stop calling me. He/she has called about a half dozen times, even though I've identified myself via text after each call.
Today, this was my response:
Stop calling me or I will begin texting you pornographic images of myself that you will never be able to erase from your mind.