Cape Town - John-Laffnie de Jager says he had no choice but to quit his role as South African Davis Cup coach after losing the trust of Tennis South Africa (TSA).De Jager on Wednesday resigned as SA Davis Cup coach after nine years at the helm."It's a sad day, but I had no other option. I have lost my faith in the TSA leadership. In the past year they have betrayed my belief in them repeatedly," he told Netwerk24."It is clear that the opinions of very experienced people like Davis Cup consultant Robbie Koenig, senior players Rik de Voest and Raven Klaasen as well as my support staff and myself are of no value to TSA. Instead, they hold those of inexperience players who aren’t sure selections in much higher regard. After 27 years of experience at the highest level it gets frustrating when every decision you make is questioned."We have entered a second year without a CEO/General Manager and it is clear to me that the current leadership doesn’t have the capacity or the will to run TSA successfully. Their inability to communicate, make decisions and implement them is hurting the game at every level."De Jager will now focus on his coaching job with WTA player Daniela Hantuchova from Slovakia, his academy (JL's Tennis), as well as the Matchpoint foundation, which was formed by former players to help produce opportunities for talented South African players.