08000641087

Received a query about my O2 tariff and 4 hours later my account was hijacked. Do not answer these calls! It is not an O2 business number.

missed the call, sorry I did, they got me out of bed AND cost me money on my mobile grrrrr

Got 3 calls from this number in September 2012 and two so far this week.

I have had them phoning me constantly for the last few weeks, sometimes 4/5 times a day. I don't answer 0800 numbers so decided to search. I'm with t mobile so have no idea how they got my number. Might just answer next time n give them a piece of my mind

This number has been phoning me everyday for the past two weeks, which is extremely frustrating. Like many, I don't answer 0800 calls and I usually just leave it to continue ringing.

After researching the number online, I came across this website, but also a post on the o2 forums.
http://community.o2.co.uk/t5/Discussions-Feedback/08000641087/td-p/432188

Apparently you have to opt out of o2 marketing, and even if you're not an o2 customer, you have to phone them up so they can remove your details.

"How do I opt in and out of marketing messages from O2?
We may use your details for marketing purposes to tell you about other O2 products, offers and services if you tell us we can. If you don’t want to receive these marketing communications, you can click on the unsubscribe link in our emails. If you’re an O2 mobile customer, you can update your choices by signing into your My O2 account and go to the ‘My Choices’ page or by calling 2220. If you’re not an O2 mobile customer give us a call and we’ll update your details. Changes to your preferences can take up to 28 days to take effect."

I've not tried this yet, but I will do.

Several calls from this number on my PAYG mobile - should be banned

Thanks for this, I have been getting about 5 calls a day from this number for two weeks, they have finally stopped!:)

Stop calling me I am on vacation and do not need daily calls from o2

Just one of a series that keep calling my home and mobile. I'm so fed up with them I now ALWAYS let them ring on if I don't recognize the number. If they are genuine they can always leave a message and I call back straight away. Pain in the whatsit but that's what it has come to now.

I have just recieved this number and i chose to reject it as i did nt recognize it and no doult it was another sales company or cold caller and scam .

These calls are increasing coincidentally after disagreement over phone bill with o2

Had a call earlier fortunately I missed it my assumption is that this is solo telemarketing company just be intentional idiots until they give up

I have this number on silent until something can be done

i have just answered my phone to this number and they hung up is it a scam number i wouid love to know were they got my number from

Been getting pestered now for weeks, even though I never answer 08000 numbers, just wish they would take the HINT, here's hoping !!

I think if the problem calls continue everyone should swap providers and I am sure O2 will sort it out without us having to waste our time : )

O2 customer services, trying to get me to upgrade my contract and wanting to know if I knew anyone on pay as you go so they could upgrade too.

I get calls from this number around the same time every day and I've answered twice - both times try say they are from O2 - so I have hung up. My phone is with GiffGaff and I know they can't offer me any better but as I had a missed call today I called back and called the other number to end the calls. It's so annoying having to do that and I will probably be added to another list but hopefully it will stop these calls at least!

Wow, well I tried. I previously said I'd called the additional number to stop the calls and it DOES NOT WORK!! I just had a call from them again, but I dropped the call the moment I answered because its infuriating now so see how they like it.

Keep getting calls from 0800 064 1087 if it is 02 why I have a company phone????