Same thing happened to me yesterday 02/05/2020, paid for 1000 credits and never received them.I did manage to purchase credits later through my mobile app.Contacted CS repeatedly this is the response i got.
Thank you for the report. I am seeing that you were credited the 1,000 credits you then spend 500 of those credits on 3 Pack of TaylorMade TP5 Balls (L60+) (White)
Have a great day,
WGT