July 6, 1982

''Forty-five percent of the phone calls from customers go unanswered. A customer can be on the phone for 20 minutes without reaching a Transit Authority representative.

Israeli gunboats and artillery bombarded Palestinian camps and residential neighborhoods of west Beirut today, and the blockade of the area created serious shortages of food, gasoline and some medical supplies. ''The Israelis have closed all the roads leading into west Beirut,'' Prime Minister Shafik al-Wazzan said at a news conference. ''They have stopped all food supplies and have cut electricity and water. The situation is becoming desperate. I call on the world to wake up to the realities of this criminal siege.''

The Southeast's current unemployment problem may be a sign of underlying troubles that could hinder the ability of the region's industries to remain competitive. Although many Northerners perceive the Sun Belt as one continuous flow of prosperity, five of the nine Southeast states had unemployment rates higher than the national average in May. (Page A1.)

A subsidiary of the Olympia Brewing Company, which agreed last month to be acquired by the Pabst Brewing Company, is offering to buy 4 million shares, or about 49 percent of Pabst, at $25 each, or a total of $100 million. Pabst shareholders now have two competing tender offers from which to choose. Several weeks ago, Irwin L. Jacobs, a Pabst shareholder who earlier this year led an unsuccessful proxy fight for control of Pabst, offered to buy 3.2 million shares, or about 39 percent of the company's stock, for $24 each.

On a day as bright as a diamond, New Yorkers and their suburban neighbors flocked to beaches and parks, an armada paraded on the Hudson and shrieking squadrons of jet fighters put on a spectacular show yesterday, as the long Fourth of July weekend drew to a close. It was a day of near perfection, with a brilliant sun glinting on emerald city greenswards, soft coastal breezes caressing rollers into whitecaps and azure skies arching over a metropolitan landscape crowded with sunbathers, bikers, disco roller-skaters, ballplayers and backyard barbecue chefs. For accompaniment, there were jazz and pop concerts, barrages of rattling firecrackers and the occasional thunder of cherry bombs and ashcans. And, starting in late afternoon, there was the added rumble of traffic as hundreds of thousands of holiday travelers streamed home from the day's activities or from weekend retreats.