I find difficult to handle some customers. They say to meet in some day, but something comes up and they dont appear.
They simply have something pressing to do, but I lose time and money with it.
Edit: This happens before and after i've made a sale. Contact physical meeting and I go to the customer. Selling software. The product sells below 1000USD. Meeting to talk about a sale after they contacted me or for support.
What are some good tactics to deal with this?
This may not be the answer you are looking for, but my experience has taught me that you should fill your business with your ideal customer - even at the start. Granted, my previous experience was in the service industry, where I provided a consulting service to my customers so that might make a difference.
When you're first starting out, it's difficult to turn away potential customers or let go of customers that are time vacuum; after all, isn't every customer who is paying you money in the bank that you don't have as a start-up? To an extent this is true, but I believe that you should conduct your business, from day 1, as the type of business you dream it to be. If your product or service is great and your marketing good, the good customers will come. In the end, you'll be happier that you operate a business with customers who aren't behind on payments and aren't a waste of your time. This isn't to say that you shouldn't go above and beyond for customer service, merely identify and get rid of the customers that cost more than they are worth.
As a side note, don't assume anything about a customer before you have had an opportunity to interact. I have had numerous occasions where after the initial contact, I thought the customer was going to be a pain or that they wouldn't be a repeat only to find out that they become my absolute favorite customer and refer more business to me than I can handle.
To prevent this sort of thing, we use a technique called "post-selling". Post-selling is a sales technique where you continue to negotiate even after you have agreement from the prospect on something. Basically, you are trying to prevent the prospect from changing his mind later on down the road. The technique works well when trying to get someone not to cancel a meeting.
Here's what it sounds like in your situation. After you have an agreement to meet on Monday at 2:00, say something like this.
You: Great, I'm looking forward to our meeting on Monday at 2:00. One quick question: Should I write this in my calendar in Pencil or in Pen? That is, is there a chance you'll have to cancel the meeting?
Prospect: Well, I have a staff meeting that sometimes runs long, so I might be late.
You: That makes sense. Say, is there a different day or time that would work better for you? I typically need the entire time we've scheduled, so I'd hate to run out of time and not be able to answer all of your questions.
Prospect: Yes, Tuesday is probably a better day come to think of it.
Once the prospect has agreed not to cancel the meeting, they will be much more likely to reschedule other conflicts rather than your appointment.