डेबिट कार्ड ब्लॉक कीजिए।

कीजिए is a polite imperative form of करना (to do). In this sentence, it works with ब्लॉक to mean please block.

So:

• ब्लॉक कीजिए = please block
• It is respectful and appropriate for formal situations, customer service, or speaking politely to someone.

A less formal version would be ब्लॉक करो.

This is very common in modern Hindi. Hindi often uses English loanwords, especially in areas like banking, technology, business, and government services.

So ब्लॉक is a borrowed English word, and Hindi adds a form of करना to turn it into a natural verb phrase:

• ब्लॉक करना = to block
• ब्लॉक कीजिए = please block

In real-life Hindi, especially in banking, डेबिट कार्ड ब्लॉक कीजिए sounds very normal.

Hindi usually follows subject-object-verb order, and commands often put the object before the verb phrase.

So the structure is:

• डेबिट कार्ड = the object
• ब्लॉक कीजिए = the action

That is why the action comes at the end. This is one of the most important differences from English word order.

Hindi does not use articles like a or the. Also, possessive words such as my or your are often left out when the context already makes them clear.

So डेबिट कार्ड could mean:

• the debit card
• a debit card
• my debit card
• your debit card

The exact meaning depends on the situation. In a bank or customer-service context, it would often be understood as my debit card or the debit card we are talking about.

In Hindi, direct objects do not always need को. With inanimate things like card, it is very common to leave को out, especially in simple instructions or commands.

So this is natural:

• डेबिट कार्ड ब्लॉक कीजिए।

You may also hear:

• डेबिट कार्ड को ब्लॉक कीजिए।

That version is also possible, but the version without को is very normal and natural here.

कीजिए is the polite command form used with आप. It can be used:

• for one person respectfully
• or for more than one person

So here it does not tell you whether one person or several people are being addressed. It only shows politeness/respect.

Yes. Both करिए and कीजिए are polite imperative forms related to करना, and both are used in modern Hindi.

So these are both possible:

• डेबिट कार्ड ब्लॉक कीजिए
• डेबिट कार्ड ब्लॉक करिए

कीजिए often sounds a little more standard or careful in formal Hindi, but both are acceptable.

If you were speaking less formally, you could change the command ending:

• डेबिट कार्ड ब्लॉक करो। = informal singular
• डेबिट कार्ड ब्लॉक कर दो। = casual, conversational
• डेबिट कार्ड ब्लॉक कीजिए। = polite/formal

For speaking to a bank employee, customer-service agent, or stranger, कीजिए is the safest and most appropriate choice.

You sometimes can, but in banking context ब्लॉक is the most natural everyday choice.

For example, something like बंद कीजिए means close/stop/shut, but for cards and bank services, ब्लॉक is more specific and more idiomatic.

So:

• डेबिट कार्ड ब्लॉक कीजिए = very natural in banking
• डेबिट कार्ड बंद कीजिए = understandable, but less standard for this exact situation

A simple pronunciation guide is:

debit card block kee-jee-ye

More carefully:

• डेबिट = de-bit
• कार्ड = kaard
• ब्लॉक = block
• कीजिए = kee-jee-ye

So the full sentence sounds roughly like:

debit kaard block kee-jee-ye