invasion of privacy

I recently cancelled my invest policy,this was about three week backs. I have been having an issue regarding my proof of residents, one call centre member had sent me an email and was okay,a few days later somone would email and say the cant accept my prood of residents.this was a back and forth issue for about three weeks. Long story short today I received a mail stating that Momentum hhad contacted my landlord regarding my proof of residents. Without my premssionr or notifying me. This an invasion of privacy and they actions has showed thet dont trust me as a client....Is this even allo.... I am utterly disgusted in this and the was Momentum treats they clients.When business is need then all this is not spoken about.

Shocking is not even rbe word to use.