Bladder cancer

Just had a bladder resection as cancer come back after 8 years it was originally diagnosed and treated in 2012 and came back twice between 2012 and2015 this time they put mitomycine in bladder to try and stop it coming back but I want to kill it permanently could I ask consultant to give me radiotherapy to do this and will it stop the cancer permanently. The reason I ask this is this has now screwed up my retirement plans to live in Portugal with my Portuguese partner as this is nown as a recurring cancer.