Useless Buffalo

We are waiting for a parcel to be delivered by Buffalo, for the past 2 weeks. They don't respond to e mail, WhatsApp's (you only get to talk to a robot) and then finally after holding on the telephone for almost 20 minutes you get an agent that puts the phone down in your ear because 'you are taking that tone'. My husband an I have been trying to contact Buffalo couriers for the past week now. We have send numerous e mails, telephone calls, WhatsApp's etc. WITHOUT ANY ANSWER!! So now we are rude because they don't answer!