VERIZON WIRELESS Financial Services Verizon Wireless strikes again. Internet

So now I am being charged for an early contract termination fee by Verizon because they claim I have not returned the phone, while the phone was returned to Best Buy, they sent it to a supply center or something, which then sent it to manufacturer, so at this point, Best Buy only has the receipt that I returned it, which is all they retain! So as such, Verizon Wireless is STILL calling me, EVERY day, at either 9 am or at 8 pm, eating up my ATT minutes like a rabid starving pack of wolves, costing me additional money, causing me undue stress, in a time of my life that everything has fallen apart with deaths in the family, my failing health, my studies being affected greatly, I simply don't have the time or the energy to be dealing with this COMPLETELY UNACCEPTABLE SITUATION! My part as the customer ended as soon as that phone left my hands into Best Buy's possession! I am NOT the customer anymore, Best Buy is! They should be calling them every day, NOT ME!