I first make all my settings this goes smoothly.Once ready i call using call letters and state ready tocopy ifr clearance.They correctly reply.I repeat then i get transferred to ground for taxi.Then on approach to runway i,m told to contact tower,which i do. and say boing 251 ready for departure 25right.They reply go to ground and a freqency which is wrong.As instructed i ignore it then take off after a few attempts.Once airborn i contact departure as usual and get a have a nice day.However the assigned frequency remains the same.The only way i can move on is follow the frequency chart supplied and contact the next ctr as i guess.Thanks David please advise or i will wait to check updates.Still lots of fun.