Auto gearbox wont select drive

[Manniewinaename]

Car been sitting for 2 months. She atarted first turn, reversed out the drive no problem, but can not select drive or any forward gear. Have sprayed the gear linkage and sometimes if you work the selector up and down the gate it will select drive eventually. Garage thinks gearbox may beslipping and advise to look for a replacement. If thats the case, any recommendations where i can get a second hand box with a bit of a warranty?

[Jelunga]

Oil level being low could be the problem. Get that checked first imo

[Manniewinaename]

As suspected linkage was seized, all loosened up and adjusted by garage. Unfortunately that was the cheapest part of the repair bill. Be like a new car when its finished and sporting a new MOT.

(rear shocks, new brakepipes front to rear, pads and discs all round, and new calipers at rear also)