Xperia SP not Charging

[SonY300]

Last night my battery drained to 0%

Now while charging the battery icon fluctuates between charging and not charging.Its been over 2 hours and it''s charged to just 1%.

[dm84]

Switch phone off and plug it into a wall socket to charge not via laptop and leave for about 2 hrs switched off. Then see if it comes on

[SonY300]

Still the same problem...just not charging...how can the socket suddenly become loose??.

[dm84]

Could be a sub lead problem try another lead

[SonY300]

Not working...same problem with new lead...sometimes its charging sometimes it's not...manged to charge it ...but problem is still persisting...