Baxi bahama 100- is it knackered or shall i call baxi????

Hiya my boiler wont spark up its indicating no flame, i have tried everything, the presure valve wasnt shut properly and pressure went really high i bled all rads it went back down but since then this has been happening everything else seems to be working i can hear the fan come on. but no pilot light. it did leak a bit of water when pressure was high. we had a plumber round and he said its knackered but i think hes trying to con me into new boiler do u think its knackered or is it worth me phoning baxi??