Yes, you can extend a 30-day visa on arrival in Thailand. To do this, you will need to fill out the TM7 form, provide 2 passport-sized photos, and pay a fee of 1,900 Thai baht. The extension allows for an additional 30 days.
NON-O RETIREMENT VISA RESOURCES / SERVICES
Go to the Retirement Visa Section for information on requirements, including age restrictions, financial requirements, and necessary documentation.
For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.
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No need to have pre-booked flight out of Thailand?
Mark **********
ORIGINAL POSTER
I wasn't really sure of the right terminology, thanks
Scott **********
Just a bit of terminology. Thailand does offer a visa on arrival but it is only 15 days and only for some countries. As a Canadian what you received was a 30 day stay from a visa exempt entry