Beware! Scammer!

please then also

I'm sorry that this happened to you. I understand the frustration and this may make you lose your trust with people who connect with you for the first time and want to receive some coaching. I can tell you that this is a one-off situation and most people aren't this way! 

It's just unfortunate that there had to be somebody out there who would stoop so low as to avail a professional service from somebody else and that not have the willingness to pay. These things do happen.

Well better give 30 mins demo lesson then don't give lesson without charge . Simple. I sent 100 usd to  an IM from Serbia. He took money and never gave lessons. Issue was that he took money in his gf's account so I had no way to get my money. 

track em down

Fair play. Did not expect chess.com to be interested in such disputes. This has made me a lot more confident using this site. Great to see.

i cant belive dident pay you should report it

pretty sure 50kg is a scammer himself...if the guy took two lessons and didnt pay, why woudl that matter yet? 50kg's payment plan is based on rating gain it looks like?

Also 50KG I took a look at your students, looks like a large majority of them are cheating. Examples come up where they consistently play 98-99 accuracy games. There was a reddit post about you over the summer and reviewing some of your "students". The consensus came to be that, yes, your students cheat and then review you as a great teacher. Before you say "how is that my fault?", I am not sure...they only pay if they make rating gains...maybe youre advising the cheating?

But who knows I could be wrong and the guy who stiffed you is just a jerk

Locking: Thread is focused on accusations that are best handled by reporting/contacting support.