For 3 years i dealt with svt and meds trying to control them but it didnt work. I was always in the hospital?

i would have to get adenosine to bring my heart rate down. finally six years ago they gave me an ablation it didnt work then they gave me another one and it worked great until now my svts are back. Does anyone know if this is normal i thought it was over they are scarey and i dont want to deal with it