Wrong numbers

Recently I have been receiving numerous phone calls that have turned out to be the wrong number. Once I answered and guy said "Salam Sali," which I later learned is Arabic. I think both parties were confused on that one. Either way this has increased my phone calls per week rate to about 4 or 5, and I've got about 3 or 4 wrong numbers in the last two weeks or so. In conclusion: I should probably get rid of my mobile...so useless.