no, they only wrote "per year". They never said if they mean "calendaryear" or "one year period" 🤣 welcome to Thailand! . . some say this, some say that, there is no real way to skin the cat
you cannot get a 30-days extension of the stay permit on top of a 90-days Non-Imm-O Retirement Visa. In order to achieve a 120 days stay in Thailand, you would need to exit Thailand before the 90-days stay permit expires, stay outside Thailand for a few days or up to one week, then re-enter Thailand visa-exempt. You will get stamped in for 60 days on a visa exempt entry ( guaranteed if your travel history to Thailand is not overly extensive)
he applied early, which is okay, but they should have issued the visa by November 24, two days before his flight date. The 6-month visa validity starts on the day of issue, so he lost 12 days of visa validity . . . sadly, the only option to communicate with the embassy is by email, and one should ask them to postpone an METV approval until 2 or 3 days before the intended flight to Thailand, to get the optimum out of a METV
you applied early, which is okay, but they should have issued the visa by November 24, two days before your flight date. The 6-month visa validity starts on the day of issue, so you lost 12 days of visa validity . . (day of issue was 14.11., and until the 26th is means 12 days are lost)