Olx India — olx charged me for ad, but doesn't show up in portal

I have paid rs. 499/ through google pay but olx site doesn't show and keep asking me to pay for my ad.

And, there is no customer service number or email to contact them.

It's pure cheating by company like this and hiding their contact details.

Please instruct company to publish their contact numbers and refund my money.

My user id: nsnivas in olx.

Thanks.