phonecall

hi all my partner had his pip tribunal due last Fri on Thurs morning a lady from pip called to say they had looked at his claim again and decided to award him enhanced on mobility for 5 years he was on enhanced daily living and standard mobility for 3 years. obviously he accepted the offer and they lapsed the tribunal but today he received his award enhanced on both for 3 years we've tried ringing them and the said the case manager he spoke too would ring him back but low and behold they haven't so will ring again on Monday I'm hoping this is a mistake obviously on their part and they change the dates but was wondering has anyone else had anything like this happen thanks to all in advance for any replies