As with a lot of operators including I might add some of the larger well known operators this particular operator makes salary payment through a third party...
quite often it transpires they take one big step back and point out you were actually only contracted to them and your actual employer was a company registered in say Sierra Leone
Not condoning the employer in any way, but in the rush to sign a contract it's wise to check it properly and know exactly who you are working for, which legal system regulates the contract, the actual employer etc. - and draw your own conclusions if the company needs to employ such tactics in the first place.