I am no expert, but maybe they are one of those shops that just won't do something less than absolutely perfect. Even if it costs hundredes of dollars extra. I'd shop around a bit, especially if you're on a budget.
Reminds me of the time my wife managed to get a roofing nail into the edge of the sidewall of a brand new Bridgestone. I mean, they were just weeks old. A Firestone tire shop and a dealership flat out refused to repair the tire, saying it was a safety hazard, etc. I went to another tire shop and they put in a plug for $10. Lasted the life of the car. Go figure.
Lehigh Valley PA USA
73 Olds 88, 72 MB 280SE, 78 Datsun 280Z, 71 T-Bird, 72 Olds 88, 83 Nissan Sentra, 85 Sentra, 73 230.6, 91 Integra, 83 300SD, 91 Volvo 940GLE wagon, 84 300SD, 95 Subaru Legacy L wagon, 02 Mountaineer, 91 300TE, 08 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon all gone... currently
2007 Honda Odyssey Touring, 2011 Honda Odyssey Touring