Extremely poor customer experience and service

The worst customer service I have experienced in a very long time! Despite receiving written confirmation to decrease our collection frequency, Iron Mountain continued to collect as regularly as before. Collections are at random times and unannounced, with the collections team asking any available member of the team to sign the collection form (no matter how junior). After months of appealing the additional collections / invoices and receiving little to know response, we were told that although their account manager was at fault in not updating the internal system, it is our responsibility to monitor their team's collection frequency and turn the Iron Mountain team away. We will never again engage with their services.