Delivery not received and bad service

I spoke to Lerato from Buffalo regarding my parcel. My parcel is been returned more than 4times because the courier guys have been calling on my WhatsApp number which i hardly use. When i called the Logistics they telling me that its none of their business that i don’t use the number that they were calling me on. I explained to Lerato that i only use the number for calls and not WhatsApp calls. Lerato kept on saying that they called and i did not pick up. I asked to speak to a Supervisor or a Manager but she refused apparently the supervisor and manager is the person and i asked for her Surname and she also refused to give it to me and said that her Surname does not matter to me . Ive been calling them more than 6times just for my order to be delivered to me and she couldn’t even provide me with a turn around time. I wouldn’t recommend anyone to use buffalo because their is VERY poor. Even now i am still waiting for my order only God knows when i am going to get my order. VERY VERY POOR SERVICE