Noticed similar. Had a pretty acrimonious hire experience with a large Thrifty Car rental franchise based out in suburban Melbourne (Australia) regarding admin

Noticed similar. Had a pretty acrimonious hire experience with a large Thrifty Car rental franchise based out in suburban Melbourne (Australia) regarding admin fees for damage/repair not being disclosed in the written legal documentation. Conversation ultimately ended with "Thanks for your feedback on disclosure" Upon coming to place a review, recognised several names (in relation to above) of known staff including the franchise manager against numerous 5 star reviews. Mentioning the acronyms ACCC and CAV (Consumer Affairs Victoria) saw multiple false reviews removed in haste. Needless to say, a comment was included to that effect in my own review (with screen shots linking the offending reviews to staff)