Does anyone have a problem getting their miles credited?

I've been with AP for years, had no issues getting any eligible fare to credit within a few days, I think ONCE I had to file a claim, that's about it. Then I jumped to SQ, no problems there, everything credited just fine. I've since switched to OZ and had no problems getting my credits there...

I tried crediting some Aeromexico flights to CM, which were eligible...waited, waited, waited...nothing. Filed the claim, they don't even really acknowledge they get it, but there's no recourse other than just filing it again on their site, so i did it again, no dice. I'm waiting for some LH flights to credit to NH, seems like it's taking a rather long time.

Are any of the programs sort of notoriously bad about crediting miles? I currently have between AM/LH/BA (I know I'm talking myself into other airlines/alliances now) like 6 return trips that haven't been credited anywhere, despite my efforts, and don't wanna just lose them cuz that's a waste.

Does your name on your tickets exactly match your name in the frequent flyer program?

I'm not sure where the actual match starts and stops, but I can assure you that it doesn't have to be 100% exact. I very rarely use my middle name when I buy tickets, but Mileage Plus has my middle name on it and there isn't any issue crediting there with the "mismatch". Only time I've had any issue was with Delta when first and last name got reversed, but it was sorted easily enough.