Coincidence.
There's no support for your claims. You know neither the probabilities involved nor the number of individuals contacted by these companies. You have no reason not to believe this isn't a coincidence.
edit: It's funny to receive downvotes for a statement so devoid of opinion and so obviously mathematically/statistically correct.
Assume that all 3 companies reach out yearly. They each reach out during a randomly chosen week. What's the probability that they will all reach out in a 2-week span?