my agent she created for me asked me to pay it. I have changed my password already.
If someone else created a wallet (most probably blockchain.com (formerly blockchain.info) for you, i agree with LoyceV, you got scammed.
This is a very common scam for quite some time now.
The 2 most often heard scenarios are the following:
1) They create a watch-only wallet for you, where you only can view BTC's sitting on the scammers address.
2) They create a real wallet for you, where you need to send some coins from an exchange to.
In the fist case, you don't have access to any coins at all.
In the second case, the attacker knows the seed which is needed to access the bitcoins (seed != password on a website).