Suzuki: Oil leak, suzuki reno, oil leaks

Question
I have a 2006 Suzuki Reno with a 2.0L engine. I recently had the oil changed and after only driving about 100 miles, the oil light came on. I stopped immediately, checked the dipstick and NOTHING is showing on it. I contacted the garage who changed my oil, they came out to look and said it has a broken oil line. Oil is slinging out under the air filter from somewhere??? Please someone tell me what could be causing this? I don't want to think that the garage might have left the plug or filter loose and in tightening on site, perhaps broke something else, but everything was working great, no oil leaks, nothing... until the oil was changed.

Answer
BEFORE doing any repairs, they need to show you the oil line, still on the car, and undisturbed, before going any farther.
I'm not familiar with your particular car and model, so you need to find another mechanic to go with you to examine the car, and should it become necessary be a witness if legal action is necessary.
scotty