Hi, I'm Ashik. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP
The spinning wheel indicates that your Mac is having difficulty reading and writing the files from and to the hard drive properly. Since it is a 2008 Macbook, it is possible that the hard drive is failing. So first I want you to backup all your files ASAP to an external hard drive before it completely fails.
Then please do the following steps and see if it improves anything. Remember, troubleshooting on a failing hard drive may cause it to stop working. So make sure you backup all your files before start troubleshooting.
First run Disk Utility from Single User Mode. Turn your Mac off. Turn it back on and immediately hold down the Command (Apple) key and the S keys at the same time.Then type the following command when it boot into black screen with white letters...
/sbin/fsck -fy (note the space between fsck and-fy)
If you can't run /sbin/fsck -fy then type only fsk -fy
Hit return and the disk utility should run and let it finish. When it finishes type reboot and hit return.
Note down the any error you message you get and let me know.
I don't understand. Did you try the instructions I sent you ?
It seems like the payment for remote support has failed. May be your bank or card has blocked it. So I will send you instructions in here to fix the problem.
Turn it back on and immediately hold down the Command (Apple) key and the S keys at the same time.Then type the following commands when it boot into black screen with white letters...
Hit return and the disk utility should run and let it finish. This will do some repairs. When it finishes type reboot and hit return.
Let me know once you did that, so we can move to next step
The system files are OK, but that doesn't mean the physical condition of hard drive is OK. Type reboot and press return
Then restart your Mac and immediately hold down Shift key for 20 seconds and this will boot into Safe Mode. I want you to test your Mac running in Safe Mode and see if you get the spinning wheel there.
If you have not backed up your important files already, then I'd recommend to get an USB flash/thumb or hard drive and backup them ASAP