Originally Posted by
anyonefortennis:
“I have been experiencing this problem since May and was only told yesterday after I called yet again to complain that there is a mast down in my area being updated. I asked them why they didn't tell me this in May instead of making an idiot of me by telling me to change my Sim, update the settings on my phone and other time wasting exercises and she said "why would we do that?"
They just keep lying to people by telling them if one mast is down others will take over. And now they tell another cock and bull story yesterday. If it's not fixed in a week I am cancelling my contract and they can take me to court. It's beyond a joke paying all this money and you can't make or receive calls. 
”
Don't do this under any circumstances, you'll ruin your credit file if you cancel the direct debit or fail to pay them.
Your two options that won't ruin your credit file are:-
1). Follow the official complaints procedure as set out on their website then if it's still not resolved go to the regulator and insist on being let out of your contract.
2), Alternatively write a "letter before action" (google it) giving them 28 says and state clearly (and this is a legal term) that they have not exercised reasonable skill and care in providing service to you, and if they cannot resolve this within 28 days or release you from the contract then you'll take them to the small claims court. Then you simply go to moneyclaimonline.gov.uk, pay £25* and file a claim for the remainder of the contract cost. That effectively means if the court agree, or EE don't defend they'll have to buy out your contract and you'll get the £25 court fee back. If the court don't agree you'll be left with just a £25 court cost.
*Court cost can vary depending on the amount claimed, I don't know how much your outstanding contract value is.
Either the company, the regulator or the court have to release you from that contract, if the company refuse the regulator or the court will need to force them to release you. Just refusing to pay will leave you with a marked credit file, and debt collectors on the doorstep, so please take my advice above and same goes for anyone else, never just stop paying or refuse to pay.