Filling the Viber group

Unfortunately, I took on work that I can't handle, and I couldn't even provide at least partial reporting.

So, I took on the task, he writes to add 10 thousand people, I added 800, found out that it's not feasible + cluttering contacts, many people from the list he gave me are not even on Viber, they are not there for adding people to the VIBER group. I asked him, maybe let's use Telegram, to which he replied that he would ask some guy, but in the end, he didn't write anything to me. I sent requests to 800 people, in fact, he should have at least paid 300 UAH, but no, he didn't pay. Guys, don't get fooled.