I recently tried to transfer miles from Marriott to another airline. What a nightmare. The miles apparently got "lost". I had to make many phone calls which me

I recently tried to transfer miles from Marriott to another airline. What a nightmare. The miles apparently got "lost". I had to make many phone calls which meant being on hold for 30 minutes each time. Wasted probably a full work day trying to sort everything out with them. Eventually, I just gave up as I didn't want to waste more time with this company. About 5 weeks later my miles appeared in the airline account. Very frustrating experience.