Sharing my 2cents encountering the same issue:

Try call customer service and complain to them you are WFH and internet is crucial for work, ask them to send Maxpert with 4G dongle to plug into your RGW to at least provide some internet connectivity if their first visit can't solve your fiber cut

Also, do a visual inspection from your ONU (the small TM box) all the way to where TM's fiber enter your house and make sure the fiber is intact, not cut or bend too much or fold or chew by rats etc. Usually there is a small FTB connecting TM's fiber to your house's fiber if you live in a landed property.

My case, it took several weeks, 3 Maxis visits, 0 TM visit to resolve. The last Maxis visit found that my house's fiber connecting to TM's fiber, melted due to exposure to sunlight. At last, I have to replace that fiber.