Usage of beta-blockers for someone with severe allergies?

2 weeks ago, I found out that I have Wolff-Parkinson-White syndrome and had been prescribed with beta-blockers &antiarrhythmic drug. I never know that this medication can block the action of epinephrine until I went into anaphylaxis shock 5 days ago, and the epipen wasn't able to help me at all. I was hospitalised for 3 days and the doctor told me to talk to the cardiologist about changing the drug. However, when I spoke to him, he just said that I won't have so many allergy reactions in my life and it is something that I can control by being cautious. He said that I should stick to beta-blockers since it is a safe and the best drug to control cardiac arrhythmia. I tried to explain to him that I'm living with friends who don't really understand about allergies in college and most of the time, the reactions that I have are not because I'm not cautious w/ the things I eat or get in contact with, but because of people surrounding me. Still, he still didn't change his decision. Any advice?