TERRIBLE CUSTOMER SERVICE

I've been put frm pillar to post by this Ivy lady. This all started last year October whem i was offered 80% by Shapiro agents which i went nd paid. After a month of paying i called them asking for a settlement letter, thats whem my problems started. Several call centre agents that i spoke to told me am stil owing and thy cant see that i was offered a discount. Decided to speak to a supervisor named IVY MOYO who promised to look into the matter and call me. After a month of no feedback i called her and she told me she's stil busy with my account and that she spoke to Edcorn people thy confirmed the discount. Ths year January i called her again thats when she told me to call Edcorn people myself as she is busy dealing with a lot of accounts. Ths lady has been nothing but rude to me which i dnt understand why bcz all i need is my settlement letter. I called Edcorn thy told me Ivy is the one that is supposed to deal with them not me.I ended up speaking to Mary_Jane Lestie frm Shapiro, who promised to escarlate the matter to her supervisor,that was the end of January until today the lady or her supervisor have never called bck. Shapiro service and staff are terrible.