BAD CUSTOMER TREATMENT!!!!!!!!!!!

I'm writing this very angry at this company. Old mutual finance call center agents keep calling me and hanging up the phone!!!!! This is annoying at the least and disrespectful to me as a customer!!!! Please tell your people to stop playing on our phone lines,it's disturbing because when you would need to speak to me when it's important your number will be blocked on my phone. Get your act together. Don't even know why I keep getting called and sent sms's because of not being available when they hang up on me!!!! Do you not monitor your calls and the number of times a client gets called a day?????? I'm not in arrears on my account, so WHAT THE F***K???? IM TIRED OF THIS S*** MY CALL LOG LOOKS LIKE A CHRISTMAS TREE WHIT ALL THE DROPPED CALLS FROM YOU!!!!!!!!!!!