a/c issues

What is your question?

Doesn't blow cold. Had system checked...'appears to not have leak'by draw down test. system charged(33oz added, compressor kicks on and off at 3-5 second intervals. still no cold air.....We (shop, not dealer, and I)can't find low end to hook up for pressure check. Where should I start and once fixed, will it actually blow COLD air? Hearing horror stories.