It's normal to collect a deposit. Long-distance drivers often pull a cart of goods worth millions, and no one will believe it without charging a deposit.
But I remember that the deposit for long-distance drivers in our company should be 30 thousand. You can have a look at it specifically. First of all, the company is our company, and the employees have formal uniforms and badges, and they will sign the contract and affix the company seal, and then make payment after making sure it is correct.
Personally, since the telephone is our company's internal telephone, there should be no mistake, and we can basically rest assured.