@ScammersBane I didn’t want to post public because myphonesupport spy on this site. Firertc have blocked calls to the main number 855-698-3241 on the MPS site due to the legal action they took.
but this is how I find MPS numbers that will work with frertc:
in incognito mode(so you have no cookies set) and using a US IP(won't work with all vpn's) google "windows help" or "windows support" and click through the MPS ad and you will find a new MPS number. Close browser(to clear cookies) and reopen browser and repeat this process and you get a new MPS each and everytime(try changing IP as well if you don't get new numbers)
Some number I have from using the above process: 877-918-2127
855-424-8179
888-686-5644
888-470-4991