I'd be happy if Marriott properties posted the correct amount of points for the bloody accommodation instead of trying to cheat their elite customers out of what they're due.

Case #1) Booked an overnight at an RI on a rate with a 3000 point bonus per stay but only 2500 Bonus Points posted. Property claims the Bonus on the Room Rate is only 2500 points but were eventually gracious enough to admit their error and resolve matters when confronted with screen-caps of the Marriott website clearly showing the Bonus as 3000 Points.

Case #2) needed to book the same RI a couple of weeks later, same Bonus Rate was still available. Made a point of confirming with the front desk that they would post the correct 3000 Bonus points to the account properly after the earlier fiasco. 3000 Bonus points duly posted but this time they failed to post the 500 Welcome points that I selected at Check-In. initial call to the property resulted in promises of immediate resolution but no action and on a follow-up call I was told that the IT had been down so the points could not be added, and again promises to 'make good' my account. Some days pass, and still no points, this time on calling the property I was given some load of flannel that Marriott have changed the rules and now even the properties themselves have to wait 10 days before 'opening a case' to have missing points restored. This excuse reeks of bovine or equine excreta to me, and I suspect it is simply an exercise in procrastination designed to make me give up and move on.

Case #3) At a full service property again booked with 3000 Bonus Points as part of the Room Rate the Bonus points have once again not posted, and to add insult to injury the property has used a bogus Rate of Exchange to convert accommodation spend into USD thus short-changing me on Base Points, Elite Points plus an additional multiple of points from a targeted promotion. YES I have discounted the non-qualifying local taxes - the hotel has used a GBP/USD RoE that is 8% below the current Mastercard baseline, so this is charitably a 'fat finger' error or less charitably, fraud.

It is extremely frustrating to have to deal with an organisation that is quite so focussed on finding subtle new ways to screw over its customer base with every booking - I'm not saying that Marriott and its franchises are a collective of liars, cheats and thieves but it's easy to understand why someone might take that impression away with them when experiencing serial failures to post the correct amount of points.

FWIW - Residence inn London Bridge, London, UK (Cases 1 & 2), Montcalm East Shoreditch, London, UK (Case #3). Be vigilant and approach with caution!