I was unlucky to get a one year PGWP and it is common knowledge that this cannot be extended. Every attempt to know what my options were failed and everyone I spoke to weren’t helpful (immigration lawyers and consultants alike).
After deciding to try on my own and getting denied, and with no other option left but to stop working and become a visitor, I employed the services of MTC Immigration Services hoping they can help my predicament. I was only told to bring some required documents which I did, and I kept my fingers crossed but with huge doubts. Long story short, last week, I got a message from IRCC that my PGWP has been extended up until late next year when my passport is due to expire.
I am extremely grateful and I can now sleep with my two eyes closed. I strongly recommend their services to anyone requiring assistance with any immigration issues.