A/C Service & Repairs Co

Every other time these guys came out they were reasonably priced & helpful. I referred them to family. Had them out couple weeks ago & they said the AC had leaks in the coil & leaked out the freon. They charged the freon but said they couldn’t fix the leaks the whole coil needed to be replaced. All the freon they added leaked out. Had another company out & the guy showed me the large leak in the coil. He welded it, pressured the line charged it back etc without a $ 3000 new coil plus labor bill. I’m very confused if these guys I’ve used for years didn’t know how to fix the problem or what? I liked them & the service every other time (prob 4 other calls for annual servicing etc). So use them for easy fixes I guess.