I use to get the same call. When he tells you a joke (he thinks he is funny)do not laugh. and when he said something about a different race then me I told him my wife was that. He never called back thank god.
Just do what someone did to me tell him you do not have buy power and give him someone else phone number.
He calls every morning at 830 and we never answer, I made the mistake of buying some crap saws all blades, crap pot metal 5/16 &1/4" chucks, size 4,000 boot covers and XXL big and tall disposable coveralls and some crap dry rotted 6" tie bands and he's called every morning since, that was about 5 years ago.