Training needs anaylsis required first
The Open University course for CC Managers, (used to be) in conjuntion with SITEL/BT and the CCA was I heard quite good, I dont know whats become of the course now.
I have experience of working with the trainers that delivered it and they were always very qualified expert training professionals full of industry experience. As for course content I didnt see it, so I wouldnt go so far as to recommend it on that basis.
Otherwise it really depends on what you want and to do that effectively you need a TNA. Its not much use comparing a potential new course against what you have if you dont know where you need to be. It might be better than you have already but a long way short of the desired goal but you wont know that unless you assess the size of your skills/knowledge gap.
I have encountered 2 week CCM courses that include Resource Plannning, again it depends on the depth and complexity you require and as I say that needs a TNA.
Thank you to the esteemed Mahidhar Thorve who can no doubt also provide practical guidance in this respect :-)