Social Pariah?

(An important qualification regarding the following post: it obviously doesn't apply to my friend I sent the ant picture to - you know who I mean.  Moreover, the fact that I've only just realised that I've had my phone switched off for most of today could be a factor in my apparent social isolation).

Have I become a social pariah?  I only ask as, being off work for a week, I tried contacting various friends and acquaintances to see if they were around - I haven't receive a single response.  It's as if my number has been blocked by nearly everyone I know.  It isn't just texts to friends and acquaintances which have been ignored - it's been the same story with e-mails to various people I sometimes have dealings with online: totally ignored.  I'm really beginning to develop a complex about this.  Hell, I know I'm not the most popular person in the world at the best of times - and frankly I don't care - but these are people I generally get along with!  I've been left racking my brains to try and figure out if I've done, said or written anything which might have offended them, either individually or collectively - and I've come up with a blank.

I'm well aware that I'm not always particularly good at keeping in touch with people, so a text or e-mail out of the blue from me might be met with a certain degree of scepticism in some quarters, with recipients perhaps assuming that I'm after some kind of favour, but that really isn't the case.  In any case, it would be nice to have my existence acknowledged, even if it is just to tell me to 'bugger off'.  I'm also well aware that many people I know have far more complicated and busier lives than me, having to juggle multiple responsibilities and commitments, both at home and at work. But, again, it would still be nice simply to be acknowledged by them.  I know that I'm sounding all whiny and sulky, but this is an issue which has marred an otherwise great week off of work.  If it had just been one person, I wouldn't have thought anything of it, but it's the fact that it has been across the board which has left me feeling like a social leper.  That said, I still seem to be on good terms with the people of interact with socially on a personal basis, so clearly I haven't become totally obnoxious overnight.  Anyway, I'm not singling anyone out and if you read this and you are one of those people who didn't respond to one of my recent attempts at communication, it's OK.  I'm sure that you had perfectly good reasons for not doing so and I'm not trying to shame you into responding, I'm just feeling sorry for myself right now and this is as good a way as any of getting it out of my system!