The Wales international was targeted by the former Blackpool striker on the social networking website on Saturday.
The 30-year-old tweeted the defender saying: "dm me ur number need to speak to u u no wat it's about."
Chopra continued messaging Williams to no reply before seeking out his teammate Wayne Routledge and asking him to get the defender, whom he described as a "fucking mug", to get in touch.
@AshWills84 listen if u don't get in touch it's all coming out iv got the texts and pics— Michael Chopra (@MichaelChopra08) May 24, 2014
@WayneRoutledge tell ur pal to get in touch with me ashley the fucking mug— Michael Chopra (@MichaelChopra08) May 24, 2014