Hi. That's just a poor excuse, a cheap lie. Thing is, crypto volume exploded this year, which means many people jumped the boat. Exchanges weren't prepared for this and they have very few employees who can't handle all the workload. I've sent some lisk on polo 3-4 days ago to my polo wallet and it's still not there, but in their hot wallet instead. I created a ticket and i'm also waiting.
After doing some digging, i found out there are people who waited for weeks for things to solve out.