Please follow these steps to delete your ad on OLX:

• Go to OLX or open the OLX app
• Click on Login and enter your Phone number and pin code
• Click on My ads. You can find this option at the upper left corner in your account or click on My ads icon on the app 
• Click on the Deactivate Ad button, located beneath each of your ads
• Select the reason why you are deleting your ad and click Deactivate ad.