EE mobile phone update

Received a text message on Saturday saying the problem was fixed. Sunday morning new text saying still a problem1 Spoke to EE and received same apologies and excuses and a hint that the issues are not likely to be fixed until May. Have written a formal letter of complaint to the Chiet Officer of EE Mobile with a copy to Ofcom. Addresses below;

Mr Olaf Swantree, 6 Camberwell Way, Sunderland, Tyne and Wear SR3 3XN

Ofcom, PO Box 1285, Warrington. WA1 9GL