It's common for ranks to drop before they go up higher then they were previously when ordering a package such as this. This is what many refer to as the "Google Dance."
I used this provider's service and my ranks have increased. But I too felt the initial drop in ranks. The drop in ranks does suck, but it happens especially on those websites that have weak backlink profiles. Your ranks should greatly improve in the coming days. I'd update everyone when your ranks improve. Until then, be patient. Your temporary rank drop is normal.

In fact, I may order another package later today - meaning this service does work.