The-MMMs wrote^ Thank you !!!!
Mind providing the shops name ?
The shop is Cell D'or in Hamra. this was literally the first time he had charged a CashU account before, as Cashunited only started supporting it recently. That would probably explain how he messed up and added the commission as credit.
http://marketing.cashu.com/landingpage/cashunited/en/
That's a list of all vendors that supposedly recharge CashU. You could also email the Cashunited people and ask them, as they were very helpful with me and even insisted on calling me to provide locations.