Would you like some spam in return for your help?

I did several blood donations with American Red Cross in the last 2 years, so now they have decided to thank me by spamming me with the calls on my cell phone. Today, for example, I have received 10, and only on one of them the person actually started speaking to me, the others were just silent.

A similar thing happened at the beginning of the year and after getting quite irritated, I demanded that they stop calling me and said that when I want to donate, I would just come myself - no need to remind me. Unfortunately, I had to say this to 3 people before the calls actually stopped.

Is it just me or there is something wrong with getting spam phone calls in return for your blood? Seriously, is that the way to encourage more people to do good? I know the proverb says "If you do good, don't expect it in return", but it mentions nothing about getting spam in return.

I seriously did not expect anything like that from such a respected organization as American Red Cross and before I choose to donate again now I'd think twice.