Although the use of speed awareness courses varies between constabularies, it is typically offered as an alternative to points and a fine, so if you opted to take the speed awareness course we would not expect points and a fine to be issued. It may be that there was some form of administrative error during the process - typically the offer of a speed awareness course is time-limited, so if a response had not been received within the timeframe a fine would be issued automatically. We would suggest going back through any paperwork you have and contacting the constabulary to see if the situation can be resolved.