Your Move (or Crap Move as they are referred to by my house mates) have over the year we have had to deal with them proved useless, firstly their communications have been poor, failing to send information or only sending incomplete information. They get aggressive over the phone when you don't respond immediately. The staff are often rude or difficult. When we renewed our tenancy (the house and landlady are both good your move are the problem) two of my house mate were billed twice for the renewal fee, whilst we have all had problems with them processing payments made over the phone. Lastly they signed us up with Spark energy for our Gas and Electric, who are terrible, but they also had a new gas meter installed before we moved in and then did not inform spark so we are now having to deal with that.
The only way to deal with this company is to go over their heads directly to the property owner if you can.