I think Tim Ferris mentioned services that provide virtual assistants for tasks similar to what the OP described. I remember looking into it right after I read

I think Tim Ferris mentioned services that provide virtual assistants for tasks similar to what the OP described. I remember looking into it right after I read the 4 hour work week and back then the services listed in the book were completely overrun. I never looked into it again and also never met anyone who actually used it.