Our friend here offers you a service.Aside from pride , which would let none take lessons from someone that is perhaps better , you have the choise of paying or not paying.
Mockery isn't one of those choises.
I have known Tsilis for quite some time now , and at a time we used to be partners in a LoL clan. He is quite good , and I believe he could teach you a thing or two.
+ He is trusted since , when the clan dissolved he refunded my NickName change.