"cancelled out patients appointments"

iam not very happy,iam very upset,i had an appointment to see my orthopeadic consultant on the 10th september.only to get a letter today to say my appointment has been cancelled.ive been waiting so long for this appointment as ive beem having problems since my partical knee replacement on the 4th may.so i was hoping to get it sorted out ive also had my gp email the consultants secatary to get me an earlier appointment to see the consultant.i rang out patients appointments to see if they could tell me why my appointment has been cancelled.but they just told me theres a change to the clinic. so i asked do they know when i would get another appointment they said i needed to speak to the consultants secatary.tried doing that but she is on holiday.so how much longer am i going to wait to get my appointment.its no fun when your in pain and suffering