Google Proxima Beta — money deducted from my account

On 18th may, 2019. I checked my account and rs.816 deducted to my saving account. I went through the details & found that there are many transaction of google *proxima beta g.co/helpp. I immediately complined to customer care they blocked my card on dated 18th may, 2019.
Moreover while checking my statement i found that this transaction is not made by me. So how this thing is possible.
The total amount debetid to my account is rs.816.

You are requested to get the amount refunded for which i would be highly obliged.

Also refund my amount immediately as soon as possible.