Tesco value wifi

[Marsin]

Why do you lie to me and say the o2 connection works fine in my area when it does not?

I would expect this from Tesco mobile. I left Vodafone for you and you suck. 

[Enlli]

If you are within the 14 day cooling off period you can leave.

General rule of thumb. Never change networks without first trying a PAYG  SIM on the network to which you propose to move

See if this helps

Guide: How can I sort out my network issues? 

Guide: Is the network down for me or everyone? 

[jonsie]

Obviously Vodafone gave you issues too, otherwise why jump ship to O2?

You need to change again if you still have the option without penalty fees

[Oxonian]

@Marsin 

No problem with you raising this here, but if you are with Tesco Mobile, you obviously need to raise your issues with their Customer Services' team.