Discovery Health abysmal business practise

I have paid two amount to them in settlement of claw backs. I paid as per their settlement amounts but am constantly harassed, intimidated and threatened by the collectors , Shapiro Shakes Devries, because discovery contracted them and will not call them off even though I have paid what I owe them in full. Disgusting and sickening business practise from a company as big as discovery. Shocking. Someone from discover health needs to get back to me to sort their meds out. Sick to death of them