Hitched teachers in ere please

Hey I know a few of us are teachers and i would like some outside advice (understandably we are all over the country but i'd appreciate your input anyway). I have started at a new primary school I am science leader and head of year 3. At my old school this would have been a TLR post and I would have been paid accordingly, and had 10% teaaching time per week out of class. However at my new school the deputy said i get one 'science afternoon' per half term and one 'year 3 afternoon' (out of class) but will not be paid a TLR (so two TLR slots per half term but no money) Is this normal? should I dispute it? have tried to email my union but no response as yet (not sure what im paying them for tbh!) other teachers at my school have said i should be paid but they each had thier TLR before they moved to this school Thanks - let me know if i have not been clear!