Cyndy, I have received this call on 3 different days. I finally did pick up today. I said 'may I help you' and no one answered - finally hung up. I too am in software related field.
Gott a call from this number at my business. They had my name and asked for me. When I confirmed she was talking to me she said "I'm having a hard time hearing you, may I call you back?". The connection was fine and she did not call me back. Very strange.
We are a software company, and I picked up a call for someone in our organization, just wrong country. When I asked who was calling, the guy gave me a name, and he was calling for "Austin Redding", but when I asked for the purpose of the call, he hung up. I don't mind legitimate business calls, even sales calls, but have no idea why these jerks do what they do. I even had one tell me they were calling on behalf of the BBB.