Anyone share this experience?

I've been on a short trip away and upon getting back, I checked my email account. Its swamped by mails from a mailing list at bidiiafrika@googlegroups.com.

I have nothing against any groups trying to do their thing and I appreciate the work done by other groups etc but I'm not interested in receiving email about migingo, pregnancy tests and racist remarks etc. I also appreciate that these people thought I was someone who would contribute but unfortunately I cannot.

The strange part is that I never subscribed to this group and so I assume it was done WITHOUT MY CONSENT. I'm assuming that Google do have a policy against spamming, I'm not going to unsubscribe to the mailing list because I never subscribed to it in the first place.

Before I escalate this further, what would you suggest.

Rgds.