Don R.

If the site works honestly, e.g. Jst4HookUp
Girls don't balk at exchanging contacts. Their women are not stuck to the site and they don't just want to have shallow chats 24/7 without any steps forward. On VictoriaHearts girls tend to prematurely "fall in love" with you as long as you stay in chat with them depleting credits. You can burn your money there quicker than at a poker table with chances of winning being even more miserable.
I have a strong feeling that these girls are shills for the app and they are incentivized to keep you chatting and spending credits. The odds are stacked against you on VictoriaHearts because it's a phony scam site.