Bad Service an no willingness to help/solve proble

We've ordered from waltons for a very long time. Our company recently closed our account at waltons due to bad service, no stock, all of the sudden they dont understand our orders, as well as statements that doesnt match invoicing AT ALL. <br> I owe them money but their statements state otherwise. Atleast I'm honest and tried to help and explain to them but the account lady absolutely have no clue so i just left it..<br> Afterwords they keep phoning and asking us to please buy from them again, they have new management, their service is better, they even deliver their new catalogues (at incorrect adress). So management said we can give them another chance. Orderd stationery on the 2nd September 2015. Still no order received , no feedback, no call, nothing? I've even phoned head office and even their staff wasnt willing to help me she just mailed complaint to witbank? Such a big bussiness, with such a big oppurtunity but the people working there is working this shop to the ground?