I stayed at The Royal Beach for 4 nights. On check...

I stayed at The Royal Beach for 4 nights. On check-in, they asked for my credit card to block 200 USD as security. I know this is a usual practice in all hotels where they just swipe your card but don't deduct money from your account. The swipe is just to block some money as a security.
On check out, I cleared all my accounts and I was told that my USD 200 would be released in next couple of days. Its been 3 weeks since I visited Bali but my amount hasn't been refunded. I have been trying to contact them via email/call but they have not been responding well. I am now not sure what to do. I didnt expect this from the Hotel this stature.