no i never had any problem. I am working with referforex.com where i get reports of all my traffic generation, commission earned, cheque dispatched etc....
Do you mean payments from various affiliate programs/networks? If so then yep I have had a few problems. I normally email them, if they don't contact me with 7 to 14 days then I will look into phoning them.
Most times I have managed to sort the issues out and get paid what I'm owed.
Which payment are you talking about? I never had any problems with my affiliate in getting my money. Well, get into a legitimate problem for the real money.
If you are talking about paypal then i never had any problem with that.. Sometimes affiliates transfer money in your paypal account in fixed time slot. So it may get delay...specify your problem specifically and get answers here...