Send them an email and most likely they will call you back on the same day
I sent them a very nasty email complaining that their customer service is almost non-existence and I will complaint to BNM if no one call me back.
The chat service on HSBC app is also a piece of sh*t as the virtual CS is totally useless. Last time I had to wait for almost 10 minutes before a human respond to my query on their chat service
Your chance of striking a 4D winning number is greater than of their SC picking-up your call
But their sales agent always bombard you with offer for cash advanced, personal loan, etc
HSBC should have prioritize their CS instead of their sales instead

Since the transaction were recurred without your consent, we suggest you request to permanently block and replace your card to avoid any further unauthorised charges in your card account.
We will proceed to block this card issue new card with new number and we will send it to your correspondence address update with us. However, we require your confirmation on the following details for our further action.
Should you wish to proceed, please acknowledge the following conditions:
1. New card number will be generated due to security reasons.
2. Existing credit card will be blocked and not usable anymore upon card replacement request has been placed.
3. If you have auto-debits, please update the respective merchants with the new card number.
4. Kindly cut the card across the chip.
5. Previous e-Statements will be deleted (if you are registered with e-Statements)
6. Please activate the new credit card when it arrives via 24hours Card Activation Line at 03~8321~8999, by calling Telephone Banking or send us a secured e-mail via HSBC Internet Banking and provide us with the last four digits and expiry date of the newly received card.
7. Card delivery may take approximately 5 to 7 working days by default via Drop Mail / 10 working days via Normal Mail, barring any unforeseen circumstances.
Please reply us with your agreement on the above details.
I advise you to dispute the transaction immediately so that a formal investigation can be started and a chargeback will be made upon validation of the unauthorised transaction. In order to dispute a transaction.
You may follow the steps below to download 'HSBC Dispute Form' which is available on our public website at www.hsbc.com.my.
1) Click on this link:
https://www.hsbc.com.my2) Scroll down the page and click on "Find answers to your queries or contact us for further help" under Help and support
3) Click on "Forms"
4) Click on "Card Dispute Form (PDF)"
Alternatively, you may fill out the dispute form which you can get from any HSBC branch in Malaysia.
Please be advised that you will bear the sale slip retrieval request fee of RM20.00 if the transaction in question turns out to be authorised.
Dispute should be raised within 60 days of statement date. Usually the entire process takes about 2 weeks to complete however the dispute process may take longer depending on the complexity of the case.
seems like a robot reply to me as well.