So tired of being charged for things I don't even know of

DECLINED FOREIGN T457 is this an fnb **** or what? They tell me it's payments from subscriptions to saebu online, shaw calls online and sacad online. Never heard of them. Not subscribed to them. What exactly is the point of banks? To give away peoples money? I have called and informed you to block these charges, you tell me to block them myself. I look for said subscriptions and they don't exist. I am currently unemployed so tell me exactly where must the money come from to pay for this 8.50 that keeps growing in number even though you know it's **********????????????