Hi, this is my first time using this site, I have read lots about it, and am impressed with peoples reviews and advice, My problem is this... In late 2009 or very early 2010 I stood guarantor for my grandson with Vodafone, I cannot remember if it was for 12 or 18 months contract, a when the contract was up I notified Vodafone I did not wish to stand guarantor any more and assumed they accepted this, I never heard from them at all. on feb.21st 2014 I received a letter from Byran Carter solicitors acting on behalf of Fredericksons ltd. demanding I pay them £614.30, I do not accept that I owe this money so I ignored it. I moved from that address in February 2014, on September 8th. 2014 I received another letter from Lowells demanding £514.30 to my new address, I applied online for car insurance and home insurance which I paid with a debit card in full. I was amazed how they got my new address, I can only assume through someone like Experian, but surely they are not allowed to divulge that sort of information!!! I again ignored the letter, low and behold another letter to my new address on sept.22nd. 2014 again demanding £514.30, saying if I did not pay, they would send to specialist dept. RED debt collection agency. Both letters have an account number they say from Vodafone, the same account number was on the B.Carter letter which was from Frederickson, the 2 Sept. letters from Lowells, would really appreciate some advice, as I am 64 years old and do not need this hassle!!!! many thanks Sandra