I logged in to my blockchain.com wallet to find my bitcoin are all gone. The log of my bitcoin transactions is also wiped clean. The only thing that is still there is a log of my past ether transactions. When I use the blockchain explorer to search for the two public keys that were used to transfer the bitcoin to my account it says both public keys are "unspent". I've tried opening a support ticket with blockchain.com, but no response. What has happened to my bitcoin? Is this some sort of technical glitch?
One way to categorise Bitcoin wallets is into two main types of wallet - custodial and non-custodial.
A custodial wallet is where you pay a business to look after your money for you.
If you have a custodial wallet that isn't showing the expected balance, you must resolve this by communicating with the business that owes you your money.
In this case it is likely there was a temporary problem (a "glitch") with the custodial-wallet software provided by the business.