WDET-FM listeners, upset over the recent programming changes, have filed a class action in Wayne County Circuit Court, accusing the station, its general manager Michael Coleman and Wayne State University of fraud, misrepresentation and breach of contract. The seven plaintiffs, who donated money to the public station in the fall, say management decided more than two months before the October pledge drive to get rid of daytime music programming, yet tricked listeners during that fund-raising campaign into thinking their beloved shows would continue. The plaintiffs have incurred damages in the amount of their donations, which total $850, according to court documents. Sean Fitzgerald, Wayne State associate general counsel, said the university intends to defend the lawsuit and the programming decisions of WDET.