Rebooked LHR/LIS/LHR original travel May 2015 during the month-long pilot strike for January 2016. Not offered appropriate alternative flights so queried why we were forced onto TP366 inbound rather than TP374. After 4 months and two non-responses offered free rebooking and EUR400 in compensation during a phone call to customer services. A week later I receive an email saying the file had been reviewed and I am not entitled to the compensation as the flight was rebooked before the date of travel. I believe the original verbal offer of compensation should stand, any views?