Think about it, Amazon does not take phone calls. Many companies have adopted such a policy as putting a human being into the order flow is highly unprofitable.
Would you buy from a firm that has a policy about not accepting phone calls
Personally I would not. Call me old school but to me communications are the most important thing in handling business situations. Sure e-mail, faxing and texting are all great but nothing makes up for personal service you receive from getting a phone call.