anamolina0099 Thank you for contacting the giffgaff Community.
There may be a problem with a Mast in your area, use the link below to enter your postcode and see if there are any NETWORK SERVICE problems in your area. You can also use this to also check COVERAGE of 2G, 3G and 4G in your area. https://giffgaff.com/coverage-and-service
As giffgaff uses the O2 Network, be sure to check their Network Status also: https://status.o2.co.uk/
Mast issues are maintained by O2, rather than giffgaff so unfortunately it is out of the control of giffgaff as to when these might be repaired if there is an issue with a Mast in your area.
A useful App for your Phone is the O2 My Network App, this allows you to check Coverage and Service on the O2 Network (used by giffgaff), you can get it from here https://www.o2.co.uk/apps/my-network