o2 having problems?

I just had a call from O2 (UK mobile phone provider) asking how everything was and whether I have had any problems receiving text messages or phone calls and whether I was happy with my contract. Is this unusually good customer service from the a mobile provider or a hint at something else?

Interestingly I did have problems receiving texts when I was in Greece end of September/early October but put it down to international roaming issues. I wonder if there is anything to it..